Unless you polished up your P220, I'd think the Matte would look better, although the original "checkered" OEM grips could "polish up" a bit, but the crinkle finished texture of your OEMs lend themselves more to the business at hand... "grip ability"!
Just as I've mentioned before, back in the '90s, when there wasn't much of an option, most of us on my department went to the rubber Hogue grips for our German P226s as the humidity here in the Ohio River Valley made them "hard to get a good hold on" for good control. I even went that route with my personal P220.
Given your NW location, have you tried aluminum in the winter? That would be my hesitation... around here, it would be the heat of the summer!