ive done it on small jobs never had a problem i did use 2 pack over the top, but remember it's not as good as it would be out of a spary gun.
if it was me i wouldnt do a whole wing with it as it is not very good for a job as big as that. p.s dont forget to paint the inside ot where it goes by the door do u know what i mean ? it will be easy for u l8r when u do the top coat. hope it goes well for u.