I think, with this large a tire, running them too low would allow ridiculous amounts of deflection before lending to pinch flats, and a person would catch it. I'm thinking of kids you see cruising around with tires nearly pancaked, i bet this big as tire you could run to nearly30 percent deflection without any issue.

I'm trying to find that 'slight deflection' pressure, where when sitting on the bike, the tires offer very slight amount of tire deflection.

i just got back from a 60 mile rip with the tires at about 25F/30R. The front seemed to dive a little on pavement when i would stand out of the saddle, but took to loose gravel descents like the bike was a sled.

Solid, not a whit of concern doing 30mph descending on loose, golf ball sized gravel.

I think for me 25 was a bit too low for pavement in the front tire. probably run 700x50s at 30F/35R on pavement, and drop them 5 PSI on gravel, another 5psi each to 20/25 for loose sand.