The WWAN slot does, and its not that hard to extend the cables to reach it, or reroute them to there. The main issue for me is the light. I would assume that since both the BTs are over a USB lane it would work, but due to the fact that its not the same USB lane, I really dont know. What would be great is if someone running an integrated card could speak on the matter, or I could experiment by grabbing a card and testing on my 14.1" T601, but at the moment Id rather not tear it apart as Im using it as my main PC.
If I get to building the new 15" T601ps I will make a post after testing it.
T43p, T61p, T601p, T601 (dead), T601, T60p (Prototype), X230, P53, T480 (In the process of rebuilding)