@patrik:
Well, there are different reports from different people on what "may" happen. Lempkee for example wouldn't touch a Grex with a 10 foot pole, no matter what revision the BPPC card is. :-) I used a Grex with a rev 2 BPPC fine for about a year, before I sold it. Rev 0 card cannot work with a graphics card inserted in Grex, with the latest Grex flashrom 2.2 (the old 1.x should work, however it is vastly inferior performance wise). There's a Grex yahoo group that answers all of these questions.
@Acill:
It was successfully done, believe it or not. BTW, this is an oooold thread and patrik somehow dug it up again. :-)