I've een thinking o an outdoor pull-up bar since I saw the pix of them at one of the certs this year.... That was around six months ago... check out Jon's site http://www.againfasterequipment.blogspot.com/
I bought my pull-up bar and absolutely LOVE it!!! It can be used for he obvious pull-ups but if you add chains to it, you can now use it to practice various lifts under constantly varried loads and instabilities.
Well worth the money invested. Once I learn how to post pix, I'll add them to the board...