Wisner Technical Field 4x5 bag bellows

I wonder if the Wisner Technical Field 4x5 and the Wisner Expedition 4x5 use the same bag bellows. Can you help me ?

I am virtually certain they are the same - if any difference it might be in the color of the leather.

See:
http://www.wisner.com/Page9.html

The specs for the 4x5 tech/traditional/expedition are all the same.

I used to have a 4x5 tech & would measure them if I could for your comparison.