I’d thought about this too… no WAY can I see it working in “real world” conditions though.
I’m happy to have TPMS on my car though, problem is you have to re-initialize it when you change wheel sets, and AFAIK that can only be done on the dealer’s Consult II computer not at home, so I would only get it on slicks, or only rains, or whatever. I just bought a really nice gauge and check before I go out for a session and when I come back in - at this point I’ve got my cold temps down quite perfectly so that I gain exactly what I want after the first lap and a half.