As it was posted only 2 minutes after yours, there's a good chance that it was submitted without gam3 having seen your post. (I know I have tendency to do more than one thing at once, so the posting time of my messages may have no direct relation to when I read the thread, especially for longer posts, or those that contain code samples that I want to verify beforehand).

I'm guessing that if there was a specific reason that someone would post a varient of someone else's code, they would make reference to it, and explain why they've decided to take the alternative approach.