Does this exist? A friction shifter, either with index mode or just friction with enough throw to operate an 11 speed mtb or road mech and a clamp that fits on a 31.8 road bar flat at the top?
they can be had cheaper but do size at 31.8 so a perfect fit
Mine was used for a SRAM X0 left hand shifter and did not require any bodging [ not much lever clearance mind]
Pauls / Microshift look nice, but at 200 quid (more or less) for a shifter, I may as well buy some Apex kit. The idea is that its cheap cheap. Along with easy and simple to use.
Not cheap but you could possibly mount standard bar end shifters with friction mode to these mounts https://www.sjscycles.co.uk/gear-spares ... ion-black/
But shifting across an 11 speed cassette in friction mode would maybe be a bit finicky.