@Gila_Crisis Yes, I managed to get the next loop automatically triggered with a midi controller with no noticeable delay. See my post here https://www.ehx.com/topic/1440-firmware-update-v0-57-improved-midi-clock-sync-stability-midi-control/page/2/#post-193079
Therefore I was hoping that this could be implemented directly so that no midi controller is needed. The external 3 button Footswitch is much more convenient to carry around and does not need additional power, etc

For those who want to alternate a chorus/verse, I managed to switch to the next/previous loop and immediately trigger it by sending following program changes (with roughly 6ms delay between each):

1. PC 31 (actually 30) STOP function
2. PC 35 or 36 (actually 34/35) Loop select down/up
3. PC 22 (actually 21) Loop FSW press

When you send this sequence, this stops the recording/playing of the current loop switch to the next/previous loop and start directly the recording/playing of this loop.

This way you can:

1. Start to record your verse on loop 1, by pressing the “Loop FSW” on the 1440
2. You send the sequence above and this will: stop and save the recording on loop 1, go to loop 2 and start the recording on loop 2.
3. You send again the sequence above (with loop down) and this will: stop and save the recording on loop 2, go to loop 1 and start to play loop 1

Or even more fancy:

1. Start to record your verse on loop 1, by pressing the “Loop FSW” on the 1440
2. Stop the recording your verse on loop 1 and let the verse loop by pressing again the “Loop FSW” on the 1440 (as you would do normally)
3. You send the sequence above and this will: stop the playing and save loop 1, go to loop 2 and start the recording on loop 2.
4. Stop the recording your chorus on loop 2 and let the chorus loop by pressing the “Loop FSW” on the 1440
5. You send again the sequence above (with loop down) and this will: stop the playing and save the recording on loop 2, go to loop 1 and start to play your verse again on loop 1

Or any combination of the above, put verse on loop 1, bridge on loop 2 and chorus on loop 3, if you plan to go through the bridge between each chorus/verse.

This is almost gap-less (if I reduce the delay below 6ms, the switching starts to behave a bit funny, loops are not reliably stored, etc… but at first glance, the latency seems fully acceptable with 2x6ms)

I guess it is also possible to program several switches to access directly to loop 1-20 (with PC1-20) replacing the second PC of my list. This way you could have direct access to chorus/bridge/verse/…

Still experimenting though, maybe EHX Staff can give some hints on the best timing/delays or command sequence.

Cheers