Well, here's an image of my HyperX Alloy FPS, equipped with their PBT-POM double-shot pudding style keycaps, they have OEM profile, and I've replaced 4 keycaps on R4 with OG Cherry double-shots, they have Cherry profile.
If you ask me, I would say, their tops sit 0,5-1 mm lower then the OEM ones. To me, it does not distracting at all, but it is noticable, and I can see why it would annoy some people. I recommend you trying it out by yourself, and see how it goes. OEM profiles never will be exactly the same, it would be more distracting if you have a Flico OEM set according to your image. My keycaps are closest to the Tai-Hao profile.
