Bennett do you use the same wheel rims for both sets of tires? or do you have two sets of wheels? I've been looking at buying a summer set of wheels for my car, and throwing the snows on my steel rims. But I'm not sold on the idea of having two sets of TPMS sensors and having to deal with switching them back and forth.
I have pressure indicating valve caps that I visually check once a week or so.
Much easier than getting finding a gauge and taking 4 measurements.