i've raced g-one speeds in 30mm and 35mm (on a 21mm iw rim) on two occasions with good results (one on shit tarmac and one on 70% tarmac 30% gravel). really great for these applications and no flats despite some rough, fast descents. i've also used the 35mm as my winter tire in the city and it has survived with some cuts but no flats.
the normal g-one ar in 38mm has also been faultless as a gravel racing, long ride to gravel, and commuting tire.
Haven't used the 35's, but on 21mm rim, I imagine they'd be bloody well amazing. As far as I'm concerned, it is the tyre of the moment. Everything about it is just spot on for near enough all uses.
i've raced g-one speeds in 30mm and 35mm (on a 21mm iw rim) on two occasions with good results (one on shit tarmac and one on 70% tarmac 30% gravel). really great for these applications and no flats despite some rough, fast descents. i've also used the 35mm as my winter tire in the city and it has survived with some cuts but no flats.
the normal g-one ar in 38mm has also been faultless as a gravel racing, long ride to gravel, and commuting tire.