This walk-on discussion is a little baffling to me, considering the core of our O-Line (which was good last year, and I expect to be even better this year) is former walk-ons. Spencer Long, Cole Pensick, Mark Pelini. The walk-ons on our O-Line have out-performed the scholly guys as a whole in recent history. Then add in Broderick Nickens who has been cited as a guy to watch on the DL this year. And FB historically at NU has been composed of walk-ons. Zimmerer & Janovich, both solid FBs.
When it comes to skill position guys, our walk-ons just can't measure up athletically to the guys that we can get from Florida, Texas, California, etc. There will always be exceptions, but that generalization holds true for the most part. Wullenwaber, the occasional TE, are exceptions.