Mike, my Ibanez is the Soundgear SR506 six-string. Here are the measurements:
width @ nut - 2 1/8
width @ 24th fret - 3 1/4
Just for the heck of it, I measured my Alembic five-string (might confuse more than it helps):
width @ nut - 1 7/8
width @ 24th fret - 2 7/8
The Ibanez isn't a bad instrument at all - in fact, I like the way it feels, but I really don't like the active EQ very much - the treble is too crunchy for my taste, and actually I don't like active pickups (besides Alembic!) much anyway. The thing that I love about the Ibanez is that it opened up the world of the high C string, and led me to the Stanley Clarke!