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Yeah, I'm still not convinced about TL for road tyres. The high pressure seems to render a lot of fixes problematic and the crazy tight tyre beads mean roadside tube insertion or patching are jokes. For low pressure MTB and gravel use then I get it but I'm leaving tubes in the road bike for a while yet.
hippy-
I'm using fatter tyres than I used to - 28s rather than 25s - and running them at more like 70psi than 100psi so it is probably less of an issue than when I had nightmares in TCR 2016. But it's mostly luck if you get tyre problems. I'd probably not bother with them at 120psi for skinny tyres.
My winter / commuting bike also has 28s (I need to use an extra cable tie to keep the mudguard from rubbing) but I don't bother pumping the tyres up until they are really soft, and it's fine. As long as I don't bump up kerbs!
frank9755
I've used those for road tyres (25-28mm). Sometimes they hold, but not at high pressure.