Kuechly is an ILB all the way. He is a tackling machine but probably wouldnt be able to stand up to the point of attack at the OLB spot. McClellin ways in at 260 and plays more like a OLB who also played well inside, although sparringly. Carder is the opposite and played in TCU's non traditional defense. Played mostly in a ILB role and is a tackling machine and leader, while also showing the capacity to line up outside and get after the passer. But at the NFL level either player would only serve as emergency depth at the secondary position. Like Carder wouldnt hold up trying to set the edge, and you wouldnt want to count on McClellin going sideline to sideline as a ILB.
In most cases players that are elite enough athletes to play both spots are probably ranked pretty high at their primary position, and once drafted would be pencilled in at that position unless he couldnt handle it and had to switch spots to keep a roster spot. Von Miller is a guy who could be very good at both, but would never play inside if DJ Williams goes down cause if he is on the field he's gonna rush the passer.
[ Edited by 5280High on Mar 30, 2012 at 11:35:14 ]