I like those also but shot my wad on the CZ P-10, in case my hammer CZs were getting lonely.
I thought that the APX was not suited for being milled to take an RDS. This is because it has that weird visible firing pin block which sticks up out of the slide, just the same as the M92. Right were the RDS would settle into a milled slot. Looks like it is a no-go for the RDS.
Yet the website now shows milled slides from the factory. Wonder what they did about the firing pin block.