MagicnannersI'm in the same boat. Judging by the proportions though, and looking at photos of the keyboards each size officially fits, it looks like we need 1x1.25s, and even those can only go on our CTRL and ALT keys, since the Poseidon has a non-standard bottom row.
What I don't understand is what the units of these measurements are. Because I just popped off my CTRL key, and none of the dimensions are anywhere close to a 1 in either inches or centimeters