This is an old anecdote, but my Razer Lachesis used exactly the same Omron manufactured microswitches as my Logitech G303 and my Kensington Orbit trackball. I

This is an old anecdote, but my Razer Lachesis used exactly the same Omron manufactured microswitches as my Logitech G303 and my Kensington Orbit trackball. I have really strange physical requirements for my mice due to disability, and it's generally a pain to find stuff that works for me -- so i've gotten pretty adept and swapping those switches out from sheer necessity. It's a shame that no one (seems) to make any mice with a nice magnetically coupled wear-free switching system. I have such switches on stupid things like my racing sim wheel, but not on stuff that I use daily.