I understand your trepidation. But the only thing that would prevent the crank from working with the BB is if the spindle were not long enough to span the width of the PF30 frame + Beer components BB. As I said, I'd bet the farm that the RaceFace will work, since the Rotor 3D+ is stated to work, and the RaceFace crank can be used with a Rotor 3D+ BB in a BSA frame... with a 2.5mm spacer added to the drive side, as it happens. To me this means that the RaceFace crank can span at least as far as the Rotor crank (prob 2.5mm more). I also think it's very likely that Beer components just haven't updated their website to include the new RaceFace crank, or maybe haven't yet gotten one in to test. In fact, I just searched the site for where you found that quote, and it's in a post from May 2012... the new RF crank didn't become available until a couple of months ago, so hardly a surprise it's not on their list!
Anyway, sometimes one has to stick one's neck out a little bit in order to make progress. In your case, I don't think you have to stick it out very far: order the Beer components BB, and don't even install it, but measure the cup thickness accurately, and measure your frame's BB shell (almost certainly 73mm +/-) and then you can infer what will be the outside-to-outside measurement with BB installed. For the Race Face Next SL cinch crank to work, the outside-to-outside measurement must be 98.1mm +/- 1mm (see http://www.raceface.com/comp/inst/B1018 ... lation.pdf
) ... so if your measurement is 99.1mm or less, you can make it work (note that if the measurement is less than 97.1mm then you just need to add spacers to the spindle, outboard of the bb cups... until you get up to the needed width; you can get such spacers out of delrin at most bike shops because they're used for a lot of BB30/PF30 cranks eg Hollowgrams... (Guessing based on the RF directions that you'd want to add the spacers to the drive side first, since there is normally a 2.5mm spacer on that side that you won't have).
Worst that can happen is that you have to return the Beer components BB (not a problem since you won't have installed it). It's not my money, but like I said... I'm VERY confident it will work based on the other cranks they state compatibility with.