So just from my personal experience as an intact male, I've found that the head of my penis is extremely sensitive. Not in a "oh god, I'm cumming too soon" sort of way, but in a way that's more like direct hand-to-glands contact is too rough, even with ample lube I've never met a palm that didn't feel sandpaperish on the head of my penis.
I remember when I was younger, the first girl I ever had sex with was very into it and it was always incorporated into any contact and there was never any problem... The second girl I was ever with thought she was hot shit and the first thing she did when she got a hold of it was pull the skin back as far and as tight as she could, loicked the palm of her hand and then did the "knob polishing" motion on the head that made me want to cry almost instantly. Just something I wouldn't want anyone to go through unnecessarily.
I just stopped her and showed a hand motion I like. Personally, on the receiving end I feel that you should just work with the foreskin rather than treat it like it's in the way. I prefer to have the skin over the head during oral too. It's perfectly pleasurable and arousing, the rare woman will look at me like I'm a little weird, maybe, but honestly there's a similar amount of, if not more, nerve endings in the foreskin as a fingertip. Except it's part of your dick... So it feels good in a girls mouth. Also feels nice to have a tongue wiggle inside it, just a tip if you wanna blow the dudes mind, since it doesn't seem like he's used to stuff like that.
But yeah, it's a pretty simple mechanism, honestly. I've been a few women's first intact partner and they all respond pretty positively to how much easier it is to sort of just "pick up and play."
Hope this is helpful and that I didn't just ramble on.