I end up doing this 'leveling out' more often than not; my reason is that most sound guys I work with (church volunteers) cannot cope with my constant tone-switching. I would end up switching to a 12-string (which was VERY loud) and drown everything out for a bar or 2 while the sound guy 'woke up' and figured out which slider to move.
Yes; I agree it's annoying but if you're not a pro and are short a solid sound guy it's the only option. It has been such a problem for me that, in order to go from clean to dirty with no volume change, I blend in distortion with my exp pedal concurrent with compression to keep everything even. I use my volume pot (JTV) to control something else besides volume, because if I increase my volume for an upcoming lead, the sound guy turns me back down again. I just kick over to a different patch with a more cutting tone.