Pinion seems to be the ones who are getting it right, to me:
I’d look only at bikes based on their geartrain.
( I’m sticking with derailleurs, simply because that’s what I got, but … yeah, I can really see switching & ditching the grease on the pants bullshit )
Radio-signal doesn’t go through metal, so sticking such a thing inside a metal bell blocks the signal, except where no metal is.
ie, if the top half of the bell is metal, and the lower is plastic, the signal can only get out through the lower-half.
Test the product, to discover how it actually performs, please.
There are many bogus products in our world.
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In hammers, hickory is the best.
A Vaughn ( spelling? ) California Framer, with hickory handle, is THE framing hammer, and I never want to hear about Estwing steel-shaft hammers again.
The shock-absorption in the hickory is wonderful.
( I’ve never worked as a framer, but I have worked a few years as the grunt-guy on construction sites, and have tried many different tools, trying to find the ones that work properly for years )
The only question is whether the springiness of hickory would make it prone to falling-off the file quicker than rock-maple would…
Mind you, humidity expansion/contraction would probably be a factor in that, so maybe sealing the stuff, soaking it in varnish or something?
Anyways, it’s an experiment I’d do, and if the hickory doesn’t work-out, then try rock maple, see?