No, I don't and I don't see the point of it, but if it works for some, then that's ok too.
I don't believe that doing a 5 finger gymnastic gesture and then moving the mouse pointer to the required application and clicking on it could ever be faster than hitting cmd+space, typing the first two or three letters of the desired app and hitting enter.
Then again, I still vividly remember the good, old days when I thought that PC Shell and Xtree were the bomb in comparison to the command prompt and doing everything with a couple of keyboard strokes was the norm.
Why not just drag the entire Applications folder to the right side of the dock (or the bottom, if your using the dock on the side), right click on the folder in the dock and then choose "Display as folder" and "View contents as grid". Then you have the exact same functionality that is easily accessible.
This is how it was in Snow Leopard and it is the "correct" way, in my opinion 🙂 and I think that Launchpad was a pointless addition to solve a problem that wasn't there in the first place. I was actually genuinely surprised when I did a clean install of Lion, or Mountain Lion (can't remember now) and noticed that the Applications folder wasn't in the dock by default.