Over the years I have seen just about every fishing outfit there is. Some folks are rather minimalist in their attire while in the bush (in season of course) and others have all the latest Gortex, Thinsalate, water proof and hook proof gear they can pack.
I don’t think the fish mind what you wear or don’t wear. Dressing for success at Ignace Outposts in Sept may require a few layers - or not.