Simple solution: I don't pull the trigger with a winter gloved finger...
Winter gloves will make ANY trigger spongey/squishy. Not my cup of tea. I generally wear flip top mittens these days with thin liners underneath. Plenty warm down to 30below (about as cold as it ever gets here), and doesn't jack with my trigger when the time comes. There's no force that would make me enjoy pulling a trigger with a winter gloved finger.
That said, I generally stay in the 2# plus ballpark with hunting triggers. I'd rather have an 8oz trigger than a 5# trigger, but after bumping off a round into the dirt many moons ago using a 14oz trigger for coyotes when I was trying to pivot my rifle just a little bit on the bipod on a walking dog, I figure a little more resistance in the finger would be nice. Learn the hard way I guess...