Fitting Shimano SC-MT800 Di2 display on a Road Bike

I’m thinking of fitting an SC-MT800 Di2 Display to a road bike, like this:

…and as mentioned here by @terry_bettershifting :

It’d be to replace an SM-EW90-A junction box and EW-WU111 wireless unit, as combined 3-port junction box and wireless unit, plus the added display for gear selection/battery status.

  1. Has anyone here done this? Any gotchas to be aware of?

  2. Mounted on 31.8mm bars, does anyone know how big the gap is between the main body of the unit and the bars? The narrow gap you can see in this photo:
    https://www.imbikemag.com/wp-content/uploads/2017/02/074388_irmo_keizer.jpg
    Specifically, is this gap sufficient to squeeze in the rubber strap, maybe 3-4mm thick, for a bar-mounted front light? Looks a bit tight to me…

Thinking aloud: if the gap’s too tight, then I believe the SC-MT800 comes with a 35mm clamp band, so maybe I could use that with a silicone rubber band/shim to open up that gap between the display unit and bar, and fit in my light’s rubber strap.

TIA. :slightly_smiling_face: