Unfortunate the Matias TP3 kept with that old design.
Show Image
(http://www.matias.ca/tactilepro3/resources/images/TP_header_r1_c1.jpg)
I doubt it will ever be a classic like the IBM Model M.
Actually it echoes the rounded clear/white design just previous to the minimalist blocky clear/white one MS Windows showed.
The latter one was really, really poorly conceived (if you ever see one in person you'll know what I mean), whereas the one previous that shipped with the G4 iMacs and Power Macs of the time was merely flawed, being rubber domed and that silly clear plastic that shows everything that drifts down in there (was a bit better when it was clear/black/silver as originally shipped).
And let's not even talk about the yellowing on those particular boards!