I am running this set up and am happy with it. The 285's stuff nicely in the flares. There is a little rubbing on the LCA's at full turn, but I expect the washer trick to fix it. Here's a pic of the setup flexed, note the rear tire fitting nicely into the flare.
Your the first person that I've heard of that actually got more than the 2.5". I had been thinking about just getting the bl at the same time, but if there's a chance that I may get over 2 inches from the lift, I may just hold off and see where I stand after the lift install.
I've heard that 2" come up before also. In fact, when I priced it at 4wd parts store the other day, they said front was 2" and back was 2.5. But if you go to pretty much any of the online sites, like dpg, or jeepersandcreepers, they call it a 2.5. Dunno why there is a discrepancy, maybe because you typically only get about 2 inches out of it, but I'm pretty sure its supposed to be 2.5.