I think this is exactly what will happen. As a matter of fact I was talking to some buddies about this just last week and I came up with the same thing. The one time Reggie threw the ball, he floated it just a little bit but all in all not too bad of a throw. Since then coach Payton has kept that play in his bag of tricks. I definitly would not be surprized to see Reggie throwing another pass during the playoffs.
I'm not sure what team you guys have been watching but I can tell you from being at the games that Reggie lines up as WR very often. As a matter of fact that is part of the reason he has so many receptions this year. I don't think any team would be surprized by that at all.
Maybe another End-around to Devry with Brees throwing the block??