SteamOS will be coming to other handhelds before you can install it on your PC 'because right now, it's very, very tuned for Steam Deck' : r/pcgaming
Steam Deck Specs: How the Nintendo Switch Compares to Valve's Handheld Gaming PC - IGN
Red Dead Redemption (Yuzu EA 3817) Switch Emulation | Steam Deck - Steam OS - YouTube
Amazon.com: XREAL Air AR Glasses with XREAL Adapter, Formerly Nreal, Compatible with iPhone and Nintendo Switch, Connect to iPhone via Lightning to HDMI Adapt[iOS Nintendo Switch Playstation Android SteamOS Xbox] : Electronics