Thanks for the info Bob. 6Sxx was the numbering scheme I'd been referred to in regards to smeagol. In fact, I was at CompUSA a few hours ago and confirmed the same build number on a demo G5. I asked the tech there if the machine was a demo or not. He indicated that it was the production model. The strange thing was, when I asked if they had any in stock for sale, he said "no". Apparently the G5 they had was for demo purposes only.
Anyway, thanks again!