Mounted on the vertical?
That's odd.
I think less accuracy due to normal flex from trim and higher vibration levels than on the fuse itself.
Less accuracy (an exaggerated target to avoid) would be good in a turnaround-only scenario but pretty useless for avoidance, especially if the view changes radically due to flex.
A spot near NLG would simplify wiring and allow a hard mount to the fuse. Lots of frame in the area, and close to avionics.
And make it easier to inspect / service. Stepladder versus hi-lift.
This is interesting, too:
Mr Harrison, said: "What we don't want to do is to gain a commercial advantage over other airlines so we can fly and they can't. We are not going to exclude people from this technology."
It is a poke in the right direction, though.
We'll have to see if it turns out to be more than just some "feel good" conjecture.