I have tried spray bomb over powder coat... It doesn't adhere directly and easily flakes off. You might try an intermediate layer of primer, but I haven't tried that.
'93 Ducati 888 SPO
'05 BMW R1200RT
'02 KTM 640 LC4 Adv
'00 Husqavarna 48" Deck Side Discharge
Arm-chair adventurist, it's all i can afford