Great pics! Cody and our mix are somewhat the same way, except that Cody loves to cuddle, but Moe will have none of it. I agree, they will probably get closer over the years. While Cody and Moe are close now, they still don't seek each other out while they are inside unless one wants to play or Cody is cold and wants to cuddle (to which Moe almost always gets up and finds a new place to sleep). Even when they are outside, they will play for a while and then go find something else to do by themselves.
Cody sleeps in that position too, as well as many other awkward ones. Sometimes it looks like he has an extra leg!