Theres more threads for GG in the CX subforum.
Sure it's not exactly the same, but if you're looking for tire suggestions you'd be better off in the CX section.
I ride some of my CXers with 28mm Armadillos, they're fine on dirt gravel, but get sketchy on sand, & grass.
Rock gets a bit technical too. Most CX tires geared for dirt, sand will work for GG.
Can't comment on sidewall durability, but the compound on most of these tires are on the soft side so tread wear is not great on pavement.
Check out the "darkside"/CX subforum, we bite your head off for asking road bike questions.
Most of us do both road, & CX.
