I see more Collie than I do Border Colle. I don't know much about rough collies, but he doesn't look similar to any border collies I have met. JMO Go put him on sheep and see what happens!

To really confuse you there is a PB Aussie in my agility class that reminds me of him.
http://www.freewebs.com/katahdin_cody/index.htm