They are different too set up compared to like pretty much every front mech for the last however many years there have been front mechs, I always check them when a bike comes in with one and they'll often be badly set up. Cross chain noise should be no worse than the older designs, but they also make noise in big/big or small/small and maybe the gears next to them.
Tell your mate and his new bike that it's just like Di2 and some gears won't work, but instead of the electrics stopping you use them, they make warning noises so you change gear manually.
They are different too set up compared to like pretty much every front mech for the last however many years there have been front mechs, I always check them when a bike comes in with one and they'll often be badly set up. Cross chain noise should be no worse than the older designs, but they also make noise in big/big or small/small and maybe the gears next to them.
Tell your mate and his new bike that it's just like Di2 and some gears won't work, but instead of the electrics stopping you use them, they make warning noises so you change gear manually.