Yep, the Lee Trimmer with a cordless drill here, too. I buy the cutter with the big wooden ball on it, for an easier grip.
Lee makes a lock stud with a 1/4 inch stud to chuck into a drill. This is a great combo.
The Lee Chamfer Tool, after trimming, may be held in the off-hand for a quick-spin chamfering.
I disagree that pistol cases never need trimming. They DO stretch, particularly the .357 and .44 Magnums, in my experience. To get a uniform crimp, particularly a roll crimp into a bullet's cannelure or crimping groove, a consistent case length is mandatory.
I check all my pistol cases for length, before loading. It's a good habit to get into, especially when using cases new from the factory. I've encounted newly manufactured .38 Special and .44-40 brass that exceeded the maximum length. God knows how it left the plant that way, but it did.