"I have several designer friends that are looking forward to the speed boost of OS X 10.6 but don't want to go through the Adobe upgrades so soon after the CS2 to CS3 upgrades."
So soon? CS3 came out in March 2007.
I'm a graphic designer at Nike, and we have a little over 600 people who are on the creative side (product designers and graphic designers) and I would guess that upwards of 95% of us use Macs. As for running Boot Camp or Parallels desktop to be able to run Photoshop here on the Nike Campus, I feel confident saying it's not ever going to happen. Anyway, that's my two cents.