I emailed them a couple of days ago so I'm hoping they might be able to shed some light on this. So far no news but if I hear anything I'll post it here
As for the above photo of the aircraft in PR7 guise, I'm not convinced that it is a PR9 wing with the tips removed. You'd need to see the upper surface to be certain of that (ie- are the power controls there) but as you can see, it has a standard aileron with a trim tab. That suggests that it's a standard wing, not a PR9 wing with the tip removed. I'm guessing that the underside shot shows the aircraft before it had PR9 wings fitted. Or did it have PR9 wings and then have B2 wings fitted, and then go back to PR9 wings?! It gets more absurd the more you look into it!