You BR boys can fight amongst yourselves.
I'll just say that nutted setups give the illusion of switch barrel capability. The reality is, nutted barrels are a pain in the ass to headspace the exact same way every time. I know somebody will be along to tell me they swap barrels on their savage to within .0001 every time, I just know I was never able to.
What it really does is prevent you from having to go to the gun smith to get a new barrel, but you end up with the thing on there until its shot out, because it's such a chore to swap barrels.
Shouldered barrels are true "switch barrel rigs". Takes ~2-3 minutes, and it's the exact same every single time.
Ultimately though, the right answer is to give your smith your action as many times as he needs. You'll usually end up with a better result...at least in my experience.
Edit: BTW - I doubt anyone asking this question is planning to shoot BR. If so, they'll find out about barrel nuts and pre-fits the expensive way.