The SP-1 can be used with autoengage, but (for blocks using AE) the switch would need to control something other than a bypass modifier. For example: shunt parallel to effect, both routed into a multiplexer w/ switch assigned input select modifier.Why not just get the SP-2 then? Though it looks out of stock/not available anywhere rn
If you can deal with that, the SP-1 is more versatile IMO. It lets the switch actually do something within the preset when pressed, like toggle blocks with a bypass modifier, or toggle other parameters in the middle of a part where you're controlling something with the pedal.