a10a7f53_DvorakHowTo___Some_Wiki__Reason
[My Experience] I rarely use other computers for longer than it takes to type in my username/password or a URL at a university box. Not a big deal. [Reason] 
All modern operating systems support the Dvorak layout natively, so the incremental dollar cost of switching is zero. This also means that if you do need to use someone else's computer for any length of time, switching the keyboard to Dvorak is a matter of a few seconds.
DvorakHowTo - Some Wiki
Reason