It's a weekend toy for me, though every morning it's tempting to grab the keys and take it out. Coming from a Subaru the FiST has been a bargain to modify and not daily driving it, to me, preserves how much fun it is to drive.
Mine started out as a daily. It made it through its first winter last year. Then over summer the coilovers and front splitter went on and I didn't want to risk it with the snow around here. So I put it in a heated storage unit and bought a winter beater that i'll continue to use on rainy days come this next season.