There is definitely a bit a pain you have to push through and you do develop callouses over time and de-sensitize your skin so it eventually doesn't hurt as much. As with anything, it gets easier and less painful the more you do it! Haha.
I've been in a couple classes that have had guys in them, but most studios cater to women and advertise themselves as "women-only" studios. I'd like to see that change and by posting about my experience with it, I hope to inspire both men and women to give it a shot!