Since I don't have a rack yet I decided to give the Giant Loop MoJavi a try.
Looks I might not need a rack at all. The Mojavi is well built and fits the bike perfectly. It hold just enough for a day ride (tools, tubes, a bit of extra fuel and the light weight fleece for the morning chill).
Tools on top:
Fuel (2.1 liter Nalgene) on the right away from the exhaust:
Tubes and the rest can go on the left side.
While standing or sitting on the bike you don't even notice it's there. It even gives you plenty of room to slide backward to hop over logs or steep down hills.
I opted to notch the rear fender to give the bag a tighter hold.
Construction seems really solid.
I'm gonna load it up and give it a test run mid week on an enduro circuit.
I'll report back after the real test run.