I've tried it many years ago. Like Otintx said it's messy and not worth fooling with. It also picks up a lot of crap, small particles of stuff from around the range, etc. Usually you end up collecting more crud, that can damage or wear on your firearm than doing good for your weapon. Personally, with exceptions, I stay away from grease period. But different firearms are have different requirements. You don't need any $20.00 a tube "flavor of the month" stuff either. Just get a syringe of Remington Gun/Reel grease, or I like Shooter's choice.
I actually never used grease on my Glocks, but one of the Moderators here, Cohland, who just got back from his re-certification armorer's class, said Glock is now recommending you use a little grease on the slide cam, and between the birds head on your trigger bar and the connector. If your not familiar with those areas, you can contact him on this site, he posted a picture somewhere, but I can't remember where. So I'm just going to use grease for the first time, just to see what happens, per Glock's recommendation.
Hope that helps,
FT
