This guy will have to wait for his younger brother.
It was available to buy starting noon local time. I refreshed the page until the buy option became available, but kept getting an error when submitting payment. Waited about half an hour and now it’s sold out. Ni modo I guess.
the community creates a lot of custom layouts too, so you just need to scroll down the list and find one. The default ones also generally work pretty well and are easy to modify. It’s just like changing your controls in any pc game.
Id hazard a guess that while the majority of people don’t change their controls, those sort of people also don’t tend to buy a steam controller.