No matter how you look at it, it's a really bad idea.
Arguments for, against,and 'eh' tend to be personal opinion usually based on the poster's own comfort level.
And all arguments are legit for that simple reason--because everyone has different comfort levels, and, quite frankly, what constitutes 'okay' in regards to sexual contact.
Personally, considering my history, I'd be a 'no' type, and I'd probably kick the balls of any guy attempting it on me into his brainpan, especially if pawing followed my 'no' response.
But again, that's me. But it also highlights why it's a bad idea in general, no matter how you look at it. Sure, people will be game for it, and be cool with it (including some women). But all it takes is once of someone breaking the rules--gropers or gropies--to make a mess of it.
And that's all I've got.