The folks who think Tim Tebow should convert to Tight End or H-back will read what they want to from his Combine performance.
The way I see it is, however, that he established himself as arguably the most overall athletic QB in the NFL, which will only help him... as a QB.
If he is put in the right system with coaches who are clever enough to know how to use him, this could yield long-term benefits (starting QB) AND short-term ones ("Wildcat 2.0").
In other words: Using him as a TE or H-back would be wasting his talents as a QB. I still contend that he could help reinvent the QB role, even perhaps in a "platoon" function (which, of course, is precisely what the Wildcat already creates, whether run by a QB or RB).