The regular GSLP worked great for me, but I never tried it.
Izzy analyzed the regular program as well at his site and loved it. http://www.powerliftingtowin.com/greyskull-lp/
And since one of his issues was specificity in regards to powerlifting, this powerlifting version might even be better. But again, I haven't tried it myself so I can't say for sure. Either way, if it's working for you, keep going with it.