Here's a big fat bump for the thread where winter tire believers preach to the choir, skeptics mock our faith, and every now and then we get a convert.

(Perhaps the thread title should be changed to make the thread "ongoing"?)
So I recently bought a new (pre-owned) vehicle, and one of my summer tires has a fairly quick leak that requires inflating every day or two, probably due to puncture. The vehicle did come with a set of winter tires on rims, which is nice because I would have bought some anyway).
It isn't exactly convenient for me to take the vehicle in and leave it for the day to get the puncture repaired, and I am considering switching to my winters early and taking the summer set in once they are off of the vehicle to repair the puncture, balancing, rotating to the opposite rims (they are directional), etc. because I don't think that the original owner ever did it based on the wear I can see.
So my question is: should I be concerned about switching them this early? I have read that about 16 degrees or so is the point where they'll wear out faster, and I don't imagine that the temperature will be higher than that consistently anymore. I originally planned on changing them in my garage the night before the first snowfall, but to be honest, that could only be 2-3 weeks away.