I'm a dude and I've been using the Braun Silk Epil for about 4 years now. Works great for me. Use it everywhere. Including the genital area and butt crack. Yep, the ol' butt crack. Don't ask me how I do it, but let's just say it takes some real flexibility...LOL nah, not really, just a special toool shall "I say. OK, it's a bedside commode with an open bottom. Just reach under and get in there!
Anyway, yeah I do get ingrowns from time to time, but usually they can be diminished or elimated with a once-over with a regular razor. As the razor will scrape off that bit of overgrown skin that covers the hair.
As for pain...it seems the arms hurt the most. Especially around the inside on the elbow. And around the hands as well. Everywhere else, with the exeption of the ol' butt crack, it doesn't hurt at all.
The trick is, that once you're relatively hair free and you just epilate to get the stray hairs that grow back in different growth cycles, you hardly feel it. In fact, what you do feel, actually feels good.
Basically, the rule of thumb is this, the denser and/or longer the hair is that you're epilating at any given time equals the amount of pain you will feel. Epilate a couple stray hairs here or there, you will hardly feel it. Epilate a clump of hair somewhere, an it'll hurt like the devil. Why do you think waxing is so painful? You're pulling a shitload of hairs out at the same time.