I know it does happen and can be successful, but I also think it's easier said than done. My point is just that it isn't ideal, and while I don't mind it too much in stretches, the idea of bringing in Ryan and having to do it most of the time he's on the court if he and TRob are out there is an unnecessary complication, especially considering some of the athletic 3's in this league who like to leak out in transition.
If TRob is posting on the right block and Ryan is spotting up in the left corner, the shot goes up and for arguments sake Iggy is guarding Ryan and immediately leaks out after the shot, it's considerably tougher for TRob to track him from the box on the opposite side of the court and break up a transition opportunity.
I didn't say it can't work, just that it's easier to say it should work on paper than in reality. The complications would stem from again playing a guy who isn't a SF at SF, which we seem to enjoy doing. I understand your point, but if putting slower footed PF's at SF and simply switching back and forth to cover was so easy, more teams would do it, yet they don't. It's why most good teams have a SF at SF and a PF at PF. I'd also argue college does'nt have near the athletes you face in the NBA of any given night(as Jimmer can attest to), and having Daly/Cuz switch is a little different as opposing PF's and C's don't leak out near as much as the athletic SF's in this league.
If we did do this, of course I hope it works, but I stand by my point that it isn't as easy as some make it seem.