Obligatory Yegge link on typing: <a href="http://steve-yegge.blogspot.com/2008/09/programmings-dirtiest-little-secret.html" rel="nofollow">http://steve-yegge.blogspot.com/2008/09/programmings-dirties...</a><p>Typing is definitely the bottleneck for me in some situations, especially when I'm prototyping something, and I can hit 100 wpm without too much difficulty.<p>As for giving it a several day test drive, I don't think that's going to help at all. The point is that once you <i>know</i> dvorak it is faster than qwerty. It would probably take a least of month of dvorak to be able to make a reasonable evaluation.