Could you be a little more specific about what workflow you’re after?
You can sequence the OP1 externally. There are multiple issues, one being midi echo, another being midi drift and the absolute timing nature of looped tape segments, another being the CC numbers they’ve picked, another being midi song position potentially being off depending on which firmware is installed, etc etc.
Multiple attempts and a rather expensive midi clock later, it’s become apparent to me that while it can be sequenced, a more fun way of integrating the OP1 is either to a] use the OP1 to sequence other things or b] keep it deliberately out of sync or in loose sync. Workarounds, yes, not remedies, but sadly it’s not a first class MIDI citizen. Other posts on this forum go into more detail.
tl;dr: do expect pain-points