I like the idea of a lever action in .454 to go with my FA. I don't shoot the full house loads in my handgun all the time, I doupt I would in the puma either. It is nice to klnow I could if the need/oppertunity arose.
If the longer barrell does not offer a substancal improvements, I think I'd opt. for the carbine. I plan to speak with some at Legacy Sports about pressure ratings. I'll share that info.
I look forward to hearing about someone's experiences with this carbine.