Even with the FX loop insert trick to act as an extra master volume, it was a total bitch to get to useable volume onstage. I got rid of it for those two reasons (weight and volume), but man did it sound good... and it was crazy versatile.
Those things are monstruously huge and weight a ton. A buddy has the older model and when he carries it on its case it's just freaking huge and heavy. This one seems to follow suit and I'd be out of interest just because of that.
The touchscreens and UI are really nice, though.