I'm not sure the Herndon/Chandler and Irvin/Cheatham switches matter much. They will probably get the same amount of snaps regardless. I would say the same for Walker and Sekona, but I don't really get Walker moving to the outside. That leaves Rohleder (terrible last week) and Hrebec (who?) off the bench on the inside. Moving Harold opposite Campbell and Childs was fantastic IMO.
Only 6 guys I feel ok about on the second string: Calvin, Childs, Felder, Walker, Chandler and Irvin. IMO, Walker has to rotate at ILB.