I've never heard of that being a problem. I have a Shadow 2 + DPP and I always grab the reddot when racking. As the gun heats up from shooting, the front slide serrations can burn your hand, so I don't see another way of doing it.
Also the CZ75 and variants are especially hard to rack due to the slide design. This is a trade off to allow for a lower bore axis among other benefits.