Re: Jazz pedals
My Vise Grip is amazing with a hollowbody in a jazz context, so I'd imagine the double back is perfect as well. I bring my whole pedalboard but when I play jazz gigs this is the stuff that gets used the most:
Compressor, I mostly use the SP Compressor at the moment (almost always on)
EP Booster (sometimes for solos, sometimes just for a slightly fatter sound)
MXR Reverb, set to either a medium plate or the room reverb setting depending on my mood and how much space I need to take up (if there's a piano player likely just room, but if it's me and a saxophonist I'll use a longer plate to fill more space).
Then the stuff I use less commonly, but still use:
Delay, just a really quiet, dark digital or tape sound with about 440 ms. I usually turn it on for chords on a more modal tune or sometimes for solos. I think of it more of a 'reflection' of my sound than an actual delay, you have to keep the mix super low so that it doesn't step on the last chord change, you don't want it to repeat a C loudly when the next chord has a C# in it. I've also used some slapback for the Les Paul/40's thing.
Tremolo, sometimes I like adding a rootsier touch to solo guitar or comping, and to pull out a bit of that Bill Frissell-folk-americana guitar thing. Just a subtle tube/bias trem, not too much chop that it stands out.
Tubescreamer, my secret weapon. Sometimes you just need to cut through a live mix, and that supersedes your need for a strict jazz tone.