I've just installed one on my Heckler. Nicely made, neat and tidy.
Not seen it going yet as I can't get the Shimano motor light output active, but as soon as I do, I'll do a writeup.
I spent a few hours installing a Magicshine® MJ-906SE and Shimano specific lead... all proud of myself.... then couldn't get the LIGHT function option on either the App or Display. Might be my age and I'm missing something.