Is this rock any good? It looks protectable with gear.

The rock is good quality and route is super fun. However, like many routes at Shelf, it probably could be gear protected.

If you like nuts and cams in limestone....go ahead! Limestone doesn't compact...it gets crushed and pulverised. Can be lethal when you apply the sort of forces a cam yields during a fall.

The statement above about trad gear in limestone is utter fiction.

People have been using stoppers, cams, hexes and pitons to protect climbs on limestone for years. Many of the climbs on Cactus and Spinny Cliffs at Shelf were actually put up using just a few bolts and some trad gear, then were subsequently "re-equipped" so that only draws were necessary.