Well considering they are trying to move to the zone blocking scheme and from what Ive learned/heard relies on quickness, it would only make sense (to me) for the most athletic tackle to be manning the LT spot, especially with Wade on the right side so Wand can get some help (as Vinny suggested). I think it can be compared well to the Robinson-Coleman switch, Wand will take his lumps (as will Carr) but in the end if the plan works out, we should be upgrading both LT and LG with Pitts switching over where he should be more dominant from all reports so far.
Im personally excited about some 2 TE sets with Bruener/Miller and Joppru/Miller on the sides. And of course Bruener|Wand|Pitts|McKinney|Wiegert|Wade|Joppru should blow holes open for Davis even bigger than that toilet seat that sits atop Cowboy Stadium. (Im not sure I can call it "Texas Stadium" anymore, after all as far as Im concerned Houston IS Texas's team.)