It will be interesting to see, but I think it's a bit of a ruse. I think they'll ultimately dare Rondo to take his jumper, and use Kobe as the "roaming double". As they see it, Rondo is a minimum threat on the perimeter, and everything else takes a priority.
Pierce is their number one concern, he always has been, and having Kobe as the tandem on him, with the option to close up the paint, makes the most sense. Phil Jackson is the kind of coach who, when playing a team like Boston, concerns himself first with taking away the number one threat, and that's Paul.
He also prioritizes assuring that his number one weapon, Kobe, is put in the best position possible to maximize his strengths. Having him as a "swing-man", instead of dedicating him to defending Pierce one-on-one, (which would tire anyone out), serves the dual purpose of tightening up the paint, and conserving Bryant's energy for offense.
Hate to say it, but Rage is going to have to be bigger than usual in this series ... he may even end up being the key. If he can hit his jumper consistently and keep the defense honest, it will force LA to adjust and expend energy in an area they didn't plan to. Here's hoping the kid is ON.
All that said, I can't imagine who the heck else they think can guard Pierce ... it looks like Paul may be continuing his dominance against the Lakers, and showing us and his LA homies the Truth, the whole Truth, and nothing but the Truth!