Glass Block advice

I am remodeling a shower, currently I am down to the studs, what I need advice on is should I go ahead and drywall and tile and then fix the glass block, or should I directly fix the glass block to the stud(s) and then drywall and tile up to it, or drywall and fix the glass block etc.
Any advice appreciated, the Glass Blocks will be the Pro-Advantage system

The people at www.johnbridge.com live and die for tiling...I'd look through there. The hardest point is to ensure a good seal between the block and the rest of the shower and to the liner.