The other relevant QB in the article was Virginia Tech's Michael Brewer. Despite some injuries, his two years in Blacksburg were very productive and a seemingly easy transition. That is comforting considering his Offensive Coordinator in those two seasons is BC's current OC Scot Loeffler.
The most reassuring part of the article was this quote from Bobby Petrino:
“I’ve known Patrick for a long time,” Louisville coach Bobby Petrino said recently on the ACC teleconference. “He had a great high school career and we competed against him at Kentucky. He's a very fine quarterback. He's big and physical, has a good release, and can really throw the football. He definitely should do a good job there.
With regards to most things, I don't trust Bobby Petrino. However, evaluating college QBs is one area where his expertise is superior to most. If he likes Towles, I feel pretty good about him too.