Now is a great time to experiment... may be a blessing in disguise, not just Chukwu, but any experiment that Boeheim may not otherwise do, even in cupcake land which is the optimal time to test what you have in the tank.
Necessity is the mother of invention, especially for people who are as innovative as JB. Sure, practice is a great measure. Practice is how Nathan Peterman was evaluated as an NFL starting QB. Sometimes measures other than practice can be helpful.
bourama/marek tandem at the 5 brings a lot to the table
i think that, as boo gets further away from the surgery & gains confidence in himself physically, he'll be as dynamic a shot blocker as pc. and as you point out, marek brings quickness & instincts to the position