I think you're the only one of the few who grasp all of this. To everyone else, forget what you were have been marketed to, desktop should be this, server should be that. The bottom line in this generation, the Nehalem 45nm generation, THEY ARE ALL THE SAME CHIP! I've already said this. The only exception is the Beckton chip, which will have a different socket because it will be a 4/8 core chip with a QUAD channel FB-DIMM memory controller.
And going back to it being all the same chip this gives apple a choice. Unlike the past, there is no need for a memory controller so their isnt a huge need to have multiple chipsets. The chips themselves with be different internally here and there (I.e. beckton) but they still plug into the X58 chipset. So this generation you can have a "desktop" class board (because it uses X58) that is made with 2 sockets and pop in two whatever Intel decides to call Gainstowns. Intel pr department is simply telling you what to think and believe by its branding process. This time around, a Mac Pro is a Mac Pro using Intel chips, it doesnt matter what the box or sticker says on the chip because literally they are the same chip. I cant say that enough.
On another note, skulltraill 2 wont be as much as an extreme/one off as it was the first time around. Unless Intel makes it that way. It will still use the standard "desktop" x58 and it wont have a different socket either, its just if Intel decides to price gainestown as an overexpensive Xeon or similar to the IDENTICAL TWIN BROTHER desktop bloomie...