It would appear as though I am the only person on the planet with this opinion but I actually find leather/leatherette ear cups more comfortable. I find the microfibre stuff hot and itchy.
However, I bought a set of leather replacement ear cups for my PC360s and it changed the sound so much that I had to switch back. I was surprised at the difference to be honest. So for me the PC360s keep their cloth ear cups. Sound over comfort in my case. Not something that would make me recommend the PC360s any less, just a preference.