I hunt in an original navy P2 as i got it before they launched the hunter one (which i would prefer) its fab, keeps the worst of the rain off and no more bulk than if i wore a tabard out hacking dont forget to unclip if you get off to do a gate!
I hunt in an original too. I wouldn't change it because I like the loose fit and being able to wear it with more and less clothing underneath it without altering it. I think the Hunter is closer fitting???