Thanks for the responses. I sent in my rebate for the free expression pedal, but I'll have to wait a couple of weeks to try it out.
I really just want to use the looper to make weird interludes between songs live. Nothing fancy. For that matter kneeling down and switching the channel real quick shouldn't be too much of a hassle.
I've been looking at the Boss RC-20 to use as a simple loop pedal, then I could just use my DL-4 as a designated delay pedal (since I like to use a lot of different delays).
I've been playing guitar for a while now but just started using more pedals (just used an NS-2 for a long time). I used to wonder how guitarists would fill up huge pedalboards. Now I know why!