Banjo and Classical Guitar have some similarities...
Both require picking with fingers, two and a thumb for the banjo, three and a thumb for the guitar untill you bring in the pinky for a flamenco strum...
Bagpipes however, I almost break a vein every time I play.  Hope I don't have an aneurysm. (sp?)  
I think I need to figure out how to play with less pressure.  I'm in better shape than some other pipers I know, and they can play for an hour after I pass out.