The other day I was at GW and played the second best player in the country and got spanked. (Some of that was dice rolls, seriously!!!) i salvaged honour anyways.
Anyways the guy had a fighty character on a cold one in a unit of temple guard with the slann. He informed me that you can indeed put cavalry models in rank and file units but their movement is altered. I cant see any time i nthe near future that i will be doing this but i am just looking for further confirmation that its true. Apparently its good to beef up the ranks a little too. Thanks