Now then, I had 2500 & OT on the table before and having 2 samplers & sequences was frying my brain. The amount of possible variables was paralysing:
OT as master or MPC?
stick to sequencing particular synth with a particular sequencer or vary as needed?
how to remember what is sequencing what?
Program change the slave sequencer from the master (or change by hand)?
Sequence something using the 2500 then put it through the OT fx?
Record OT MIDI into MPC?
How to keep a copy of everything in one place/CF card?
Consistent system for MIDI track numbering?
In the end I decided I better learn one sequencer/sampler better first (and preserve my sanity!)