IMO, at Eastern, a really good DL is more valuable than a really good OL. Obviously, you need to put the kid where he best fits and can be most impactful. But a 300 lb DT is a very useful tool in the Big Sky/6'6" is pretty tall for dline.
Converting a dlineman to an olineman is something Best would 100% do.
Dude probably tests how well receiver or DB recruits can block an edge rusher.