[SV650rules]

Originally Posted by ophic

There's a police backed theory that creating a triangle of lights helps drivers judge distances better - so the lower mounted auxiliary lights on some of the adventure type bikes are a good example to follow.

A triangle is still a triangle when apex is lowest point. IMHO mounting DRL higher (on handlebars) makes them more visible to other road users, especially on roads with dips and crests -and has benefit of keeping lens cleaner and away front stones kicked up by other vehicles.