There's a local session where a clarinet player used to turn up quite regularly and keep up with the fiddles pretty well.

I reckon the worst thing about it will be the transposing. Most folk tunes are in D or G - which would put you in E or A. The fingering on clari is so awful that it could be very tiresome.

However, if you persevered &/or found more suitable tunes, I'm sure it would sound beautiful.

--Callie (a reformed clari player - now sax player!!)