His 10 yard split of 1.51 is better than any DE that attended the combine (where the leaders were Vernon Gholston, Chris Long and Jeremy Thompson who all tied at 1.53). I've heard the 10 yard split is a very good predictor of pass rush potential.
Here's an interview:
http://www.tfydraftpreview.com/news.php?newsID=129
Q: Have you been flown into any NFL team facilities for private interviews and workouts?
Brian Johnston: Yeah, I just got back from a three-team tour; I guess you would call it. I visited with the Seattle Seahawks, Jacksonville Jaguars and then the Kansas City Chiefs. And after all those visits, I am starting to feel like Kansas City has been the most interested in me up to this point.