I totally agree with the secondary bevel thing. There's no use in polishing the entire bevel with a finishing stone if the microbevel is all that matters.

I could see that happening with the Blue, but there are other factors involved like wieght distribution over the abrasives etc., my guess is that since it doesn't really do well with a traditional bevel, it may not make a difference on a microbevel, but then again, you never know till you try.