enigma1 - 10:47 am on Feb 21, 2012 (gmt 0)
How likely is this given a segregated linking structure?
The structure may help with content focus, not type of site. If you have 10 product pages and 1000 information pages on the same domain, I don't think the SEs will perceive your site as a shop. Because if they did you would have 1000 pages of thin content. Either way is not beneficial if you wanted to sell online.
Then again, I don't know the site setup so I can't tell more without seeing it.