The barrel differences are 99% semantics.
So, the stock issue is what you should be (and seem to be) concerned with.

How mainstream do you want to be? Does absolute Max anything make you happy? Do you give a **** what anyone else thinks?
I've turned my 10FP into a nearly 20# monster and packed it across all north America for almost 2 decades. It isn't pretty, it isn't light, it isn't like anyone else's because it isn't.

Cheers