Everyone likes to bash him like he sucks just because he's the "weak link" on our O-Line that is otherwise composed of 3 first round picks and a second round pick. I'm no guru, but I think he holds up pretty well - at least in regard to those that say he sucks.
I agree that they'll probably wait for cutdowns, but I won't be surprised if they pick up Ertz (assuming a cap friendly deal).
He'd be a friendly target for Wentz and would fit into the offense in no time.
Fresh off making the majority of those starts, he couldn't stick with the Colts PS so I'm not sure you can read too much into it. Tevi has more pedigree as a true tenured starter than Holden and Davenport certainly, though mostly at RT IIRC.