I won’t be quite so diplomatic about my views on the pick-up machines, I feel they are clunky and badly implemented and seem that they were rushed to appease the looper market (the OT was billed as next level looper on launch, pickup machines were added a fair way after the OT appearing on the market)
If you have used most other loopers then pickup machines will appear to be quite counter intuitive, but more than this they do not operate in tandem - from a UI point of view with how the other machines in the OT work, totally different button presses to record into them for example, it seems like they were developed in a vacuum to the rest of the machine by someone else - though this is pure speculation on my part.
My experience with pickup machines goes something like this, OS gets updated with pickup machines, I tried them out, much head scratching, much forgetting that one wrong move and say bye to your loop(s), realization that the same thing can be achieved with other gear without any of the hassle, never used them since.
Now, this is not to say that the OT isn’t a great machine,and it certainly takes some beating as a hardware solution to playing/manipulating loops, but for use as a looper recorder actually the flex machines are much much better, but the pickup machines can suck it as far as I’m concerned. 
So I do not see the point of pickup machines at all, I’d rather the resources in the OS be used for something else.
YMMV, always ask the bill payers permission, caveat emptor, IMHO etc.
