Thank you all for your kind words and comments.
The bench is made from a local Douglas Fir tree that I had custom sawn into lumber. I dried the lumber for about 18 months before I started the milling to laminate the top. I also stumbled across a 6/4 board of Sapele that was about 12 inches wide and 14 feet long. I picked it up at a sale. I used that board for the edges of the bench, the breadboard ends, the pin-striping in the benchtop, and all the bench dogs.
Dave, you're right about spotting the hinges. Good eye! There is indeed a compartment in the bottom of the bench. Here's a couple of pictures taken during the construction process that show it a little better:
Hank Knight, I think I'll deal with the anxiety, the thought of whacking it with a hammer makes me cringe.

Gregory, the twin tail vises stem from the ambidextrous design of the base. I am mostly left handed, but some tools are designed to work best when used right handed. I wanted to be able to do both. The bench does not sit against a wall, so I can work off either side. From one side the vises are laid out in a right handed arrangement and from the other, left handed. They can be used independently or together. I'd originally hoped to be able to use them like a twin screw, and this will work, but it's limited by the distance between the guide rods on the two vises. Here's a better view of the tail vises:
And this one, from before I drilled the dog holes: