It's your call.

FWIW:

I have years of driving in Colorado and the Rockies. The X has 19" with Daimaris. I made it through a few winters here in Santa Fe BUT only drove (crawled) it in town, 35 or less and without any major snow or freezing conditions.

Those summer tires suck on slick snow or ICE!!! Absolutley no control. On the crunchy, fresh or soft snow, I made do. It scared the hell out of me, sliding uncontrollaby into an intersection on a .5 % incline because of slick packed snow and ice. If the guy in that Chevy truck hadn't been driving defensivley, it would have been an ugly (me 5 mph, them 30) 4 car pile up.

I have given up and put a set of Vredesteins and 18" rims this year. Not worth the risk and I have ALOT of miles in blizzards, passes and living at 10,000 feet in the rockies.

The main reason is the tire compund itself. Below 35 it freezes hard and has no reactive capability, like a hockey puck, it just SLIDES.

I would look around for used all season tires you can trash later. Above all, always use common sense about the conditions.