[scholia]

Which run of the mill wireless keyboards have mechanical key switches?

[kybernetyk]

There are quiet a few. For example Matias offers wireless models with Alps key switches. Filco has bluetooth models with Cherry MX switches.

[yellowapple]

I think the point of the parent comment was that mechanical keyboards (except for maybe the junk Razer sells) aren't considered to be "run-of-the-mill" compared to the millions (if not billions) of rubber-domes floating around, and a wireless mechanical keyboard would be particularly far outside the "run-of-the-mill" classification.