I'd tell the sound man, "There's my signal. Get a level on me....
Excellent post, Colonel.
That line above is also why I will often use my processor at a down-and-dirty live gig rather than my pedal board and amp. When preparing for such an event, I'll spend quite a bit of time getting my patches right and I will have already tested them in rehearsal to know they sound good. It is WAY easier to just let the sound guy take a direct feed from my processor than it is to fuss with mic'ing a cabinet, and running all my lines (amp in, control switch, and FX loop) back and forth. The processor also takes up a lot less room.
Truth be told, I do actually like using an amp and pedals best. If setup time, the stage situation, and the set list permit that rig, I'll use it. But, sometimes logistics and ease of setup sort of dictate an alternate approach.