No, but tell me more!

The flat bar (and the threadless stem adapter it's fixed to) got installed when I took the drop bars off. Using her for shortish 'commuter' rides had me seeking a more upright posture than what a road bike requires. Making the gearing changes (14-34 in back, 3x up front) for the hills 'round here came first but as the original friction shifters worked so well (still!) I never felt need of changing anything in that mech.

My Kona Dew+ has a thumb shifter though so I'm familiar with the concept albeit in a limited way. After acquiring first a Spesh Tarmac last year, then a Diverge late this year, I've pretty much burned through my 'disposable' income budget for biking stuff... but always interested in learning more about things yet unexplored.