I stumbled upon this third party client a couple of months ago. Switchfin started out as a Homebrew client for the Nintendo Switch. It has since been ported to the PS4 (also Homebrew) and all three major PC OS's. For Linux there is a flatpak, but not on flathub for some reason.
If you are looking for a client that works well with your living room PC, the upcoming Steam Machine or a gaming handheld, this might be worth a look.
Just installed it on my Vita and Deck, it's pretty great!