See my previous threads. I'm a classical guitarist, able to cover even the most complicated flamenco.
I can play bluegrass and have many times. It's one of the most underrated genres of music. The amount of skill that goes into playing bluegrass is very, very high.
I have a long and involved story about playing bluegrass. I'll spare you the story, except to say that there's a whole lot more Jesus in Indiana's bluegrass than there is in Tennessee bluegrass. While on a long bender, it was quite a surprise to learn this - and more than a little bit awkward.
In the end, it worked out okay, but mostly because Ol' KGIII can play the ever-living $&%# out of a guitar.