Does anyone know...

Will bar-end shifters or Bar Cons fit a 22.2 mm handlebar? In particular, I'm looking at a project involving a bike I have and a trekking or butterfly bar.

Also, will they allow room to "cap" off the handlebar wrap as well.

I've only checked with one LBS so far...they didn't know the answer, and they didn't have any in stock to experiment with. I didn't want to pay for them to order Bar Cons just to find out.

Thanks!