There is also this option. This company "Gavenalle" makes brake/shifter setups that also have a separate thumb shifter for 11sp that can be converted to indexed or friction. Specially made for them by Microshift. You would have to confirm with them that it will fit your bar end mounts but if it does, would be what you're looking for and of course you would have to buy the mounts separately. Gevenalle Shift Levers – Gevenalle You might also be interested in their brake/shifter setup as it has all the advantages of bar ends plus easier to use IMO. Shifters – Gevenalle