Indexed bar end shifters.
- friction front shifter allows for exact trimming to eliminate chain rub.
- extremely simple to set up and use.
- know where your chain is on the cassette by a quick glance or feel. this isnt possible with STIs.
- they can run in friction mode for the rear in case anything wonky happens...though that isnt likely to be needed.
- can use MTN front derailleurs since its friction shift up front and doesnt rely on a preset amount of pull.



I havent used Gevenalle shifters for touring, but...
- they are bar end shifters mounted to the front of the brake lever and so they are just as simple to set up and use as traditional bar end shifters mounted to the bar end.
- having used them for a few months on a gravel bike, they are extremely easy to shift with.
- they still provide the benefits mentioned above like knowing where you are in the cassette without looking at the cassette, being able to use a MTN front derailleur, and ability to trim front derailleur so there isnt ever chain rub.