Some persistent picking at the top of the case reveals a couple of Torx screws.

Gone are the frontal access panels. The two screws at the top are all the M9 relies on, so far at least.

Maybe this One doesn't have the Hermetically Tight Case we were fearing.

So far, so good. The M8 came fastened with screws rather than formidable adhesive and finicky clips, so let's hope the anti-adhesive trend continues...