Firmware 3.20! Note Sequencer is awesome with external synths –
I put a patch together that receives midi clock to be in sync and is able to start and stop via footswitch A. Footswitch B brings both sequencers back to the first step.
The LFO can act as a tempo modifier to create 1/8 and 1/16 note pulses against the overall clock.
Use the step sequencer (patched to velocity) for dynamics and also silencing a step from playing.
You can create syncopations that way!