i have those also but the drag created seemed to slow down my draw . I have a holster made local ( Backwoods leather ) that sticks in the pocket , mine has a hard plastic shield to keep from printing on the out side . anyway the CT grip seems like a good idea except it also gives away the shooters position and uses battrys .
like i said i use it as a training tool more than any thing else
the battery may [never so far] let me down training
5 or 6 days a week i draw point [not aim] and pull the laser instead of the triger
thousand shots a month with out the trip to the range
and mush practice with that laser marking my triger pull dry fireing
all for the cost of the grip.....no ammo cost
live fire in the sun where i can't see the laser anyway shows me the training is working