If you want to be like everyone else put them down, Personally I like the look of them on the bars looks way better, plus spreading the lights out makes you more visible which is always a good thing.
Something just looks off to me. Proportionally, the headlight looks too high, and the light bar just makes it look more disproportionate. I'd get rid of the sigs altogether, and fab some sort of bracket to lower everything down a bit, or get taller bars. JMO. if you ride as if you are invisible, then you really don't need to be visible at all.