where will title bouts be held for the ufc and pride crossover fights?

Has anyone herd any news on this?I think the outcome of some of these fights could possibly come down to whether or not their fighting in a ring or an octagon.

Example:


Couture could ground & pound crocop up against the octagon all day but in a ring he would have no such advantage.

I thought that I heard that they would alternate year after year, once in the octagon and once in the Pride ring... Which I guess is fair..

I know that CroCop standing gives him more of a chance to strike, but if good wrestlers can use the new unified rules to their advantage, then they can keep scoring points on those TD's... I guess it can go either way...