This time you are most surely wrong (Doesn't happen that often.)
If you look at the 7.0.X directory structure, you will see that there is now a clean 32/64 separation, and Klaus K's promise of 64-bits programs working necessarily implies a lot of binaries stuffed in. Last year, I was somewhat skeptical about this kind of hybrid approach - I'm not any longer. I think it's more a question of adapting packaging to a dual setup. Still, non-hybrid setup has its important place - I'm writing this from the "pure" 64-bits 6.4.4-adaptation - but it doesn't have to be as big as we have thought.