You're right Phil, I would only carry the can because I'm not going to keep the stock tires. Using the optimal tires for the season is always..well, optimal.Sure, but with a blown out sidewall or other major damage beyond the ability of the tires to seal, the fixaflat is not going to seal it either, right? With smaller, sealable damage, you don't need the fixaflat to reinflate, since the tires won't deflate in the first place. So, fixaflat adds little or nothing to the OEM selfsealing tires. Am I missing something?
I'm thinking your approach is best - good summer tires (we don't really have winter in Southern California) and carry a can of fixaflat.