Never did it.
I like to wrap small things in Bacon, but if I want a Butt & Bacon, I'll smoke the Butt, and I'll do the Bacon separate, and put them together when consuming. That way I can make Perfect Bacon, and the Butt can get plenty of Bark, instead of the Pale meat that would be under the Bacon if you wrapped it with Bacon.
Just My 2 Piasters,
Bear