There are a few but very limited ones available.I'm curious that, considering the patent for those shifters is probably long expired, and how easy is nowadays to copy a design, why no other brand or even startup has not decided to produce copies in Alixpress for like 10$ and sell thousands...
I know Dia Compe recently released a bar end shifter compatible with 12 speed, but at 150$ for one it won't be flooding the market...
There are a few but very limited ones available.
just expensive
That's an interesting point but I'd be worried about damaging the thumb shifters that way.My set up and when you get a puncture and flip the bike upside down to remove a wheel it's more stable resting on the shifter levers, for extra stability right hand lever pushed to 7th gear and left lever pushed to big chainring positions