Not purchased my MF yet, as I would like to know if there are any issues reported when using the MF in combination with Kontrol X1. I would dearly like to keep my X1 in the loop as it is great for adjusting effects on the fly, but like the idea of live performance editing with the MF too.
I don’t know what happens if I would press all play buttons on those devices at the same time
But no problems at all. The core things is to set the correct in and outputs for each mapping to the correct device. That way they won’t interfere which each other. They even do respond to each other; if I press play on one device, the status-led goes on on that device, but also on the other devices for which that status has been mapped.
I’m often using 2 (APC 40 / DJ II) or even 3 (APC 40 / DJ II / MF ) together, pressing buttons left and right and it works like (how do you say this nice..), like a charm