I know this might sound stupid but I just think it will look better.
A lot of Audi have fog for DRL, so your not stupid
Does a Euro Switch allow JUST fog lights to be on?
and yes the euro switch will help, but on my 2005 passat, I had to remove one relay(185 i think) but i don't know for your case. For sure is doable
by the way love your black roof, any more pict?