The 3 digit covers typically purchased from Aerostich workwell to kep water out but are zero protection and way too sweaty in a really hot sumer rain. OK when colder but not otherwise..
I've got some BMW ProSummer gloves not yet vetted in a frog choker but they look like they'll be pretty good with wet hands. They're about the same weight as a Held Steve but not as good leather. Be nice to see someone make a good kangaroo palm in a GoreTex rain glove..

My only problem with bare hands in summer rains is the complete lack of protection for vulnerable waterlogged skin. I actually prefer the feel in really hot weather but won't take that risk...