Kimarhi unfortunately only has one real purpose for me until I get Lv. 3 Key Spheres, and that is stealing Lv. 3 Key Spheres from Biran and Yenke. And for that reason, I send him down Rikku's grid, and thus he has a lot of speed, and the Steal and Luck abilities; and I spend my Pendulums from Remiem Temple on him giving him an armor with Master Thief.