Missouri River Carp?

Carp seem to be all over the shop these days.  I'm not sure how I feel about them being in areas that they're not likely native to but they seem like they're a load to bring in.  What do you guys/gals think of carp?

What's SPRINGing up in Montana

The Headhunters Fly Shop boys are at it again--early season fishing for Montana trout.  They also look to be crossing fly fishing with rugby league judging by the wealth of sponsor patches emblazoned across the jacket.