I don't have the big loop but I do have a Guide Gun in the .45-70. Awesome little rifle. I will never part with it. And I have a lot of other quality centerfire rifles. Topped with a 1 - 4X shotgun scope, this is my 'go to' rifle for chasing black bears in the thick woods. And with a 300 gr soft point, it thumps them pretty good and they don't go very far.
The only difference between the 2 rifles is the lever, which can be swapped out in a matter of seconds.
I think they also make it in a blued/grey laminate which is pretty cool looking.