John, I've tried wearing a regular pair of elites under my 2 layers and it was too thick to function properly. I couldnt even get my sneaker on. With the 2 layers I've just worn them by themselves.
For reference, I was a big fan of wearing 2 elite socks (one over the other) for basketball but now I have a different idea.
With my cleats: I've been wearing the Nike football compression socks (the volt ones...came out a while ago but are hard to find now in stores) and then my vapor elites over them. Adds a bit more cushioning. The support/lockdown (no sock movement) of the vapor elites is great but they arent as cushioned as the bball elites.
For bball: Same concept as for football. Wear the compression football sock then the elite bball sock.
Hope this makes sense.