Hardback card sleeves?

like hanafuda style cards, thats what i would like

i like hard cases for my cards, but the clear ones show fingerprints and i heard theyre not useable in tournament beecause of that.

i know hard cards are more difficult to shuffle, but its not impossible. most people dont shuffle their cards like a 52card deck, with the bending and bridge and etc. so it would be like a normal shuffle. they could be rounded/tapered on the sides for easier shuffling.

i just think hard cards would feel nice to play with