I don't, but someone I know does.
However, our aesthetic preferences diverge massively. He's into tacky/gaudy/ricer boards like the Logitech and Razer offerings, and couldn't get into mechanical 'boards because of his perception that all of them were dated-looking Model Ms or something. Then I showed him a picture of Das Keyboard Model S and the Razer Blackwidow to show that some of 'em do look flashy, though I'd prefer the plain "just means business" look of a Filco, Ducky, Realforce, or the cancelled Miniguru. I don't like the hump that Das Model S has in the upper-right (while he does), and the Razer Blackwidow's choice of font for the keys turns me off. (On the other hand, I must admit that I'm interested in Kinesis and Maltron boards BECAUSE of the appearance brought on by their sculpted designs, with a bias toward the black-cased Maltrons due to their retaining the numpad in the middle.)
Also, he's definitely in the backlit keyboard market, while I don't see much point in backlighting for the standard extended keyboard layout that IBM brought with the Model M. I can feel my way around, and I shouldn't have to look at the keyboard in the first place. (Notebook keyboards tend to be a different matter, due to their non-standard layouts and oddly-sized keys, but I can live without it.)
Same thing with computer cases; he likes the gaudy Cooler Master HAF line in terms of styling, while I'd rather take one of the more plain-looking Lian-Li or Silverstone offerings on a pure aesthetics standpoint.
Where do you folks stand there?