I also have a 34" inseam, and look stupid on anything with wheels less than 29"/700c.

Like you I can’t do 1x on an endurance bike.

The solution for me with the Cutty was to do what MAGAIVER mentioned above: build it up from frame with a Di2 mix of Ultegra and XT. The gearing is 38-28 with an 11-40 cassette; and it works great. I have a closely spaced cluster for finding the groove on pavement and smooth gravel, plus deep gears for those late ride steeps that must be spun.

I considered a mechanical 2x11 with XT derailleurs/crank and MicroShift bar ends. These work with MTB derailleurs and can also do friction. I used this combo on a drop bar Highball conversion I did. It works good too, as most single track riding is in the drops (for braking efficiency) and the shifters are accessible there too. To really dial it I cut an inch off the bars so the shifters were closer to the hands.