I've never actually used an Ergodox. Are the keycaps different for the left and right sides? Or do they only differ based on row profile (i.e. R1, R2, R3, R4)? The render shows a vertical R2 keycap for open braces/open bracket ("{", "[") on both the right-hand and left-hand sides, but unless the right-hand and left-hand sides have different stem patterns it seems like that would be a duplicate keycap which could potentially have a different label on it.