My last drummer played a nice Roland V-Kit. He had no problem calling up very realistic acoustic settings. And he could go all electronic synthy on us when needed. Other perks are no futzing with mic'ing and EQ'ing a kit, that can all be done in advance.
The main issue I have with electronic kits, if you are still using floor monitors, is they won't sound like a nice full acoustic kit on stage in a typical floor wedge. You can get them plenty full in FOH, but unless you are all using in-ears, you won't feel it the same as a nice acoustic kit UNLESS you set a separate sub and main on stage for the drummer's stage volume. Which is like running a separate P.A., which is a P.I.T.A.
But that's what we did. I couldn't talk the band into funding in-ears.
Agree with all of this, however I don't personally need FOH quality sound onstage in order to know what we're playing is good. This may be because I've dealt with a lot of very poor stage mixes in my day so I've learned not to expect much, as expecting a lot from the stage mix ends up being distracting during a performance when things aren't perfect.
That being said, the one and only time I've had real issues with E-drums was the most recent show we played. The soundman wanted a balanced XLR line out from the V-Drum brain and we only have 1/4" out, so he plugged them into a different channel than he was planning.
I don't know exactly why (but I have theories). What came out of the monitors was massive, boomy, reverb-drenched kick, and hardly anything else he was doing could be heard above the heavy verb. The sound guy kept coming up to the drummer asking him to "turn the reverb" off to which we continued to reply "there's no reverb on; we have never heard this before." Which was true. He's never used effects from that brain, not even sure if he even has them. And when we brought the kit back to my studio, everything sounded fine.
So I believe there were effects routed into that channel on the digital board that the sound man didn't know about and he failed to figure it out because his first instinct was to blame the drummer. Isn't it always?
Anyway, we managed to put on a good show and video showed that the house mix sounded fine, so it was definitely the monitor mix that was affected, and whatever was bleeding out into the house from the monitor mix didn't get back to where most of the audience was. We played the best we could, even though I couldn't hear his attacks well enough to be certain we were locking in. We did OK anyway.
Other than this, I have had no real issues with E-drums playing with this drummer for about three years. In general they are easier to play with because we're not fighting to stay above the drums in a stage or rehearsal mix. That's not a problem in every genre with him on a regular kit, but it's a problem when the music is high energy and the drummer wants to hit hard.