My stage rig is sometimes stereo, and sometimes mono. On larger stages, I use a pair of Euphonic VL110 cabs in stereo. On smaller stages, I use a single Xitone 1x12 wedge.
I have very few patches with dramatic left / right panning, and I have a second set of those same patches, without the hard panning. I only use the big L/R panning patches when we're at a venue with a stereo PA. Otherwise I just use the less extreme versions of the patches, and send a mono feed to the board.
The sound of stereo onstage is very satisfying. I think it sounds bigger and better, and because there is a little more depth from the imaging, it sits in the on-stage mix really nicely and allows me to hear my sound at a much more comfortable volume. I've been a professional musician for 30+ years, both onstage and in the studio. My experience has always been that the better you sound, the better you will play. With a mono source - especially one that is tightly directional and focused - guitarists tend to turn up because they want to hear themselves; so you wind up with an unpleasantly hot signal in some places. I have run stereo onstage for a long time, even when the mains are mono. It produces nice coverage and definition at a more pleasant stage volume.