The all out approach? Does this work on you girls ?

...as long as you come off genuine, then yeah ...I don't mind the forward approach. That being said, if you came up all sleazy like, put your hands on me, etc... I'm gone. ...and to kind of go along with what another girl has already said --if I could see your buddies in the background watching you come up and they were all grinning and whatnot, I'd most likely politely say that I wasn't interested. Past experience, most guys that have their buddy system in the background are doing it as a bet, game, etc... and I would probably think you were just trying to score, instead of actually be interested in me.

If you sound sincere when you say it, yeah. It'd work. And I'd probably grin like an idiot as well. It doesn't sound like a complete 'line' so it's probably safe.

I've had guys come upto me in clubs asking my name and wanting to chat for awhile. I like that approach as its not like some of the idiots that come up saying " babe I saw you and thought I need to talk to that sexy bitch right away" its like dude wtf?

I think what you wrote would work it seems genuine and not creepy :)

It would work if he was sincere and didn't come off smarmy or like a creep

It would probably work for me provided the guy is sincere. I recognize that it takes a lot of courage to approach someone. I'd probably talk to the guy.
However, if he approached me with a cocky attitude and all of his buddies watching, I'd be turned off. I prefer not to be part of his 'scoring' system.

It would work- if you seem genuine and sincere about it. And I'll be honest- it does depend on my mood at the time too- if I'm in the mood to have fun and meet people, it'll work. But if I'm just having a bad day and totally sick of people, I might not respond as positively (but it also might make me smile). Basically, if the girl seems like she's open, I say it's not a bad tactic and definitely better than you coming up to me with an obvious line.