Pretty sure the 'unsecure' note is because it's such an old forum format.
I have only had a very limited exposure to the Blackwood Tek - it was on an RCM kit that I never went ahead with. I have to say that it didn't seem very nice. It's was flaky and just looked fake, combined with other peoples experiences I'm kinda glad I didn't mess around with it. I was just going to seal it anyway. I'll be sticking with maple and staining if required.
On the topic of synthetic timber boards, my Hagstrom uses one - a product they call 'Resinator'. It's really really good to play on, fantastic feel, very smooth and looks great. So it's absolutely possible to do it well, I guess the PBG suppliers haven't quite worked out the best recipe for it yet.