IMO front turn signals are useless. Most accidents I've heard of are caused by cagers turning left in front of the motorcycle, and no front blinkers are going to stop that.
Maybe that's because the motorcycle is going in a STRAIGHT LINE when this happens so they would be using their signals?
I would never give up my front signals, I want every advantage possible when I'm out there in the mix. Same reason I would never go with an integrated tail light. I have very bright LED's in the back, with stock spacing.
No more Aprilia, moved on to MV Agusta.