Nice Undercover! I've had no problems with the two Undercovers I own.
If the grip is too large for easy concealment, or the rubber grabs an overgarment, you might want to take a look at Altamont grips. They have some decent choices. Link: http://www.altamontco.com/experiment...istol/charter/
The good thing is that Charters all use the same grip frame, so you can swap grips between models. I currently am running older wood grips on my Bulldog that came off of a .38 "Police Bulldog" from the 70s. Much better for concealment than the rubber grips.