Just an observation but it looks like the blade has to come out of its slot(when assembled) and be bolted to the side then covered with the cross brace. Of the others available the blade has been made to fold into the two uprights completely covering it and making it safer. This also eliminates the need to use wing nuts which can catch on things.
Yes -I can confirm it is different to the design you've mentioned.
Jonnie's saw has a slot the saw in the GB doesn't, the Blade is also completely covered in storage.
They are
different saws of slightly different designs.
The GB Saw uses Wing Nuts so you don't need tools his requires a screwdriver. It's all swings and roundabouts.
To be honest, the design of any Bucksaw is open for debate , this is the design that is available via the Group Buy.
I hope that clears up any questions. Thank You.