I took the GSP to ND the last few years, around the central part of the state and had a lot of fun. Plenty of pheasants around and not a lot of people to contend with, but there aren't really a lot of public areas. I was thinking of trying MT this year to try a different kind of landscape, more...
I bought them, pretty awesome, saving me a ton of weight! If you buy the Picatinny rail, you have to attach it to your rifle, so you have to screw into the stock, personally, I don't think it's necessary, just rest the stock in the Y of the bipod.