He's not the best skater. Definitely not a strength, but not a huge weakness. His best assets are his shot and passing ability, in my opinion.
I was pissed that we didn't sign him at the time, and still am. With that being said, I can see why they probably didn't. Might not be a ton of room for him on the Avs in the future...but it's not like it's a bad thing to several good offensive D in the system. It might make a guy like Barrie or Elliott easier to trade if you want to get good value for them at some point down the line.