okay. That Thompson clamp posted above has an important feature, and that is the floating nut that can rotate to accommodate the change in circumference as the clamp bolt is tightened.

reduces bending moment on the bolt.

also that nut is steel ! Don't pay money for a clamp (titanium or any other material) where the bolt is just threaded into the base material.

I have one like this on my ebike - replaced the standard clamp. works very well. 2nd pic

add a chinese titanium bolt in rainbow anodize from eboy for style points and you're all set for the coffee shop.

Titanium in particular is prone to galling. if you get a fancy titanium clamp and the bolt is threaded into the material, you'll have problems for sure.

/markp