After reports that Valve had received shipments of the accessory, a Steam Controller review has appeared. Deleted ahead of a likely release date update, a YouTuber praised its responsive dual trackpads. Even so, the price may make it more difficult to discount the Steam Machine.
My Ultimate 2 Wireless has 4 extra buttons.
Two of them are up by the triggers, though. And in Bazzite, you need to be connected via Bluetooth to use them (they’re not available with the RF dongle).