me or hamster reminds me of the simpsons? (Postscript) I like your logo! :)
I think it's good. But does the tube have anything to do with it? but it's good anyway :)
You might need to simplify it a lot. In my design classes we were always told that a logo was a simple image communicating some values of what it's trying to represent; simple because it should be easy to remember and reproduce.
Yours is still pretty memorable and easy to describe though, so I don't know how my advice affects your final draft...
If I'm commenting on what you have right now, I would suggest cutting out most of the blueprint background, using a vertical, rectangular layout, involving the text with your subject Joe, like having him pull himself up by grabbing a letter maybe, unifying the perspective of your words and your subject, maybe a more urban typeface for "Parkour," and quite possibly experimenting with the typography.