Yes, structurally it looks like it should be very robust.
But guitar players like their bass response, and my guess is that this guitar will have a fairly weak bass response. It'll probably sound lovely in the high-frequency registers, though.
I was looking at some old ladder-braced parlors just the other day. Sort of the opposite end of the spectrum -- virtually no added longitudinal stiffness.
Most of them had the usual belly, sound hole sinking, etc. But one of them didn't. 60+ years old and looked like new. The only differences? Reasonable sound hole reinforcement and a larger-than-normal bridge plate.
Sometimes, it doesn't take much. Stiff and light isn't necessarily a good thing. If it were, we'd all be using lattice bracing.
