I have a Pentax K-5 with battery grip D-BG4 attached. Whenever I move the camera in or out of my camera bag (a Tamrac Pro 12), the front e-dial is audibly moved. Should I be concerned about this possibly causing excessive wear and tear to the e-dial assembly on the grip? (I can't adjust the camera bag much farther.)
If your bag moves the dial more often then you do, then give the camera to someone who uses it more :)
Seriously, while there will be measurably more use, it should be comparatively marginal. Perhaps it will die a day sooner than otherwise but I wouldn't be concerned about this.