This is my opinion, and I have to say, take it with a grain of salt. I do not know the ins and outs of the AKC, I do not know how difficult it might be for purchasers to do any trialing with these dogs, I do NOT breed and simply don't know a lot of what I am talking about.
Considering the history of our dogs here in the US, especially with lots of rumor (likely true), about English Pointers being breed into the American Brittany lines, etc... I think that you will hear a lot of different things. Some breeds new to the US aren't even recognized by the AKC. I think the important thing is to make sure you are breeding a good GSP, with good hip checks and overall health. Also, consider your ability to sell the pups without papers, maybe line some buyers up first or be ready to keep all of the ones that don't sell. Your asking price would suffer as well.