Those are indeed very nice pieces; welcome to the world of complex switching .
Can you also enable/disable pedals within patches? That would really make it a perfect device.
Yes, you can enable/disable each loop for all presets, however, when you combine two pathes, the 'on' in a patch takes precedence. Basically this means you can't turn of a loop that is turned on in one patch by adding another patch. You get the sum of the 'on' loops when combining patches.
The above is only for the top row. The bottom row always cancels all other patches, so you can use the presets on the bottom row to avoid tapdancing.
Edit: after reading you post for a second time: you can only disable loops within a patch by switching of the pedal itself, or by altering the dip-switches on the fly (not recommended). This is the main reason i have only single-loop presets on the top row. This way I can enable/disable a patch by switching it on/of. Leaves for a bit of tapdancing, but the presets on the bottom row prevent the most of that.