Mike
Yes it is my design - kind of winged as I went. Got some new tools for christmas and wanted to try scooping for the seat and top rail, as well as bent laminations (simple enough but need more clamps).
Curves through in a few design challenges for me and that was the reason for the overlay / inset of the back as I didn't bend the slats to fit the back legs but didn't want the back to lay behind the legs.