Anecdotally, when attending a show, and experientially, when performing a show?
This seems to be a very generic question, why are you asking? 
But yes, I use Elektron gear and nothing from Akai in the studio or live. How do they even compare?
On a forum dedicated to Elektron you’re going to get a very skewed set of answers to this question 
3 more according to latest estimates. 
one elektron and zero akai
Team Elektron here.
Performing on OT since 2011. Rytm 2015.
I used MPC500 plus ableton once for a live show, in 2007.
In 2020, zero. Trick question though since the reverse is also true
I’ve only recently contemplated doing live shows. At different times I’ve owned and used OT’s/DT’s exclusively and at other times Mpc Live/One exclusively. I now have an Akai Force, and its been the reason for me to contemplate working live.
I never got that desire from any Elektron gear.
I’ve owned MPC’s in the past and see the appeal as a live machine. These days I could see performing live with just the SP-16, or probably with that and the A4 with a few pedals.
There is no hidden agenda motivating my question. I ask questions to develop better understanding and learn from the experiences of others.
Lets break down the question though since you asked.
The first part of the question, “how many people”, lets readers and potential respondents know that I am polling for opinions from a group. The question then goes on to define that group.
The word “use” targets particular “people”: a group who have experience in the matter.
The word “more” and the position of “Elektron” in the question, prior to “Akai”, establishes a hierarchy while also acknowledging and providing consideration for any potential regional preference (the “region” being an Elektron forum). The particular order of subjects can also be seen as acknowledgment that, of the two brands, Akai is preferred over Elektron by many people.
Finally, we get to “in a live setting” which defines a specific sub-group within “how many people”: only those people who have used equipment from both manufacturers in a live performance setting.
As for anything "between the lines?
It’s only implied in the question, though well documented, that Elektron and Akai use very different design philosophies. Their respective methodologies and workflows define how they can be used in a live setting; the performance of the equipment will effect the performance of the artist. As with any instrument, methodology and workflow must be mastered before performing in a live setting. The difficulty encountered during the process of mastering multiple instruments generally leads to preferences. For example, if one is a multi-instrumentalist it is likely one will enjoy performing with certain instruments over others, perhaps to the point where some instruments are relegated to specific tasks and one particular instrument becomes one’s primary instrument. One may even come to eschew performing with certain instruments altogether
I think that about covers it.

the past 10 years of infrequent gigs: MPC1000 or Roland SP555 or sometimes both. I’m mentioning the Roland since for me it’s about simplest-possible setup, sometimes audio off a phone for extras etc.
A few gigs I had no sequencer running at all, a couple of times: song mode on the MPC.
I’d be willing to bring out the Monomachine too perhaps except I’d need extra security based on the current secondhand prices.
I have zero akai gear and many elektron pieces.
Performed one gig with an MPC1000 in 2016, which was very much structured songs with arrangements tweaked on the fly.
Since then I’ve performed with A4 or Digitone and a small modular setup. Although still structured to some degree, these have been much looser and more improvised than before. I feel more confident performing with the Elektrons than with MPC. Tried building a set with an MPC Live but it simply wasn’t fun to perform with.
Quazar uses MPC live the whole set.
I still do not get how you play a one/two hour set on the units as you have to switch between projects, so you have to stop the music several times. This might be no problem in a more band focused context, but in EDM it seems the audience wants no stops.
“in EDM it seems the audience wants no stops.”
oh, no, not the audience. I hate those guys.

I suspect the answer for many people is “a delay pedal”
or building a whole set in one project, which is totally doable.
…performing live for two hours in a row is nonsense…
no mainfloor on this planet would take this…
and there’s pretty much no difference in results, if ur working ot or mpc based…
in fact, to perform live in serious fashion, u need one or the other or both if u wanna avoid a laptop, running an ableton document, leaving u in most cases lookalike reading ur mails on stage…
I own several MPCs and a bunch of Elektron gear (all setup in my studio). I haven’t performed since February this year, but when I do it’s all live (improvised) and all Elektron as I feel much more comfortable generating and manipulating music on the fly with my Elektron gear (OT, DT, A4 in live setup).
That said, Akai’s MPCs also are very capable for live settings. Just a different workflow and emphasis compared to Elektron gear.
I don’t get along with my MPCs for performance because I find the sequencers quite slow to manipulate on the fly compared to the Elektron stuff (+ little quirks with the MPC that just don’t fit my workflow). But if you finger drum a lot or if you prep your tracks and work with Track mutes & stems a lot, MPCs are fantastic for live performance.
I must have lived in a parallel universe…
Wow.