The answer is probably 'No' !
Ah I don't race so of no great interest
I've also seen these on Aliexpress, would be interested to hear how you get on with them!
Tracevelo did a quick review of them on his Youtube channel, go to 3:20min to hear his comments:
View: https://www.youtube.com/watch?v=1pKEIp05koE&t=322s
I think you might be right which really does surprise me to be honest
Neither do I, but it's always good to keep abreast of modern technology
I tried Tubilito tubes on my Trek for awhile. Very light, can drop 100g per wheel but they puncture easily and while they can be repaired, I've never had one take to it very well.
If you want to use them on a race bike to drop some extra weight, fine, but for general riding, no.
I'm long since gone tubeless and not going back to tubes.
That's interesting - heard one of the benefits was improved puncture resistance over butyl... this drew me to the idea, but I'm put off by permeability and patching issues. If they're no better than a standard tube for puncture resistance that makes for an easy decision!