I use MIDI switching to cover all of the Looper functions now. But aux switches work well enough. You might want to place them close to the H9 or TimeFactor, and use the onboard footswitch for Stop. Triggering the Record function from the stompbox is possible, but you’ll probably be using that often. Record and Dub (& Play) are multiple functions under one switch.
I’ve found that keeping Erase somewhat isolated from the rest of the switches helps cut down on accidental erasures.
