Shoulder holster long slide 1911

I have a long side Colt 1911 in 460 Rowland (yes, it IS that cool!).

I fantasize using it walking somewhere there is larger wildlife, may/may not happen. But I would like to have a good holster. Perhaps in the other side a couple mags. I’d also like to be able to wear my daypack so I can be hiking/fishing. Although truth be told I’ll wear it mostly when I’m in the hills around here shooting and look real cool.

Have no idea of where to start in this search. Any manufacturers you recommend?

Thanks,
Greg

BTW:
JTQ. Please forgive me. I should have said thank you earlier for your help.

There are some good options.

Thanks,
Greg