Moose, Drew and Clyde...you guys are sworn LEO's and I'd never presume to teach you anything about the job...searches, seizures, pat downs and cold weather on duty are not in my past or future...but as one poster said and I heartily agree, you'll fight like you train....no truer words come to mind...thanks for being on the line for all of us civilians....
Given the quality of today's shooting gear, a pair of gloves that keep the cold and sharp pointy things off finger tips, but still allow adequate control of trigger and shooting grip can probably be found...then it's practice...and muscle memory...
40+ years of flying..the first 10 in the military...taught me the value of realistic training...as close to line or combat flying as humanly possible...with the firm belief that you'll fly (or for that matter, fight), as you train; but it takes a hell of a lot of training to develop that muscle/mind memory that will take over in an emergency....if the job or environment requires gloves, then get the best pair for the job and practice with them.
Rod