tested it with a macro and you can actually dive on the first frame you touch the wall with biiwa (idk if the window is more than one frame but you can do it on the first at least) which works pretty much exactly how old wall climbing used to and is definitely the fastest way to climb a wall. also probably tas (tool assisted speedrun not the guy) only i tried mashing it manually and could only get 3 in a row (so like theoretically humanly possible but Really now)

also tried climing by pressing shift on the wall to fall off then diving but that bonked every time while this didn't. i dunno what makes this trick not bonk when diving next to a wall in almost every other situation would but whatever