Thank you gentlemen. The model including the joinery is based on an existing chair so I guess it would hold up. There's also a version with sliding dovetails instead of bridle joints and a more reclined version as well.
I really like this chair and would like to build a set of them for our dining room. I need to design/find a table that would go with them. I have a few ideas brewing in my head for that.
After I get the steering wheel and rudder head for my sailboat finished and a couple of other projects out of the way, I'll probably do a mock up of this chair from construction lumber to see if I got the dimensions right.
This was also an exercise in using Photomatch in SU. All I have to start with is a couple of photographs and a funky video of the chair being built. There are no given dimensions so I made a couple of assumptions once I got the basic geometry drawn and rescaled the model to suit.