I think the idea they suggested was for pure SEO. Branded URL, unique brand focused content. With links going to the website.
So someone searches for Armani J31 Jeans, they find our armanij31jeans.co.uk site, unique content, pictures, style advice all focused to that brand and style of product. We update it weekly with new pics, new stock, new content.
I see the idea but I sort of think, is it better to just focus on building links direct to the website, rather than having this network of sites all linking back to the main website?