Yes.......I read how important it was to rest it so did so.Ribeye / beef rib is one of my favourite cuts of meat - so versatile. Good as steak, a roast if it's a larger piece (pref with the bone in) but it's also, thanks to the marbling, absolutely brilliant to do in the slow cooker, braised in beer, and with lots of onions. Any leftover steak is lovely cold, sliced thinly and shoved into a crusty roll with butter and a smear of horseradish,
BTW, if doing it as steak, don't forget to rest it for as long as you've cooked it.
Re slow cooking. When you say "in beer" do you mean literally ie a bottle of ale or simply add some beer for flavour?