Definitely can type faster with my Topre (over my rubber dome keyboard). The very, very little wobble in its keys makes it much easier for me to type more accurately, since I don't have to worry about hitting the keys at certain angles to get the key to go down (vs. Cherry switches, which has a little more wobble, and therefore makes me think more about hitting the keys correctly). Which, of course, helps me with my WPM.
I will say, though, that I could achieve very, very fast peak speeds with a Cherry MX Brown board that I tried out for a couple of days. But, again, I made more mistakes on the keyboard, than I did with the Topre, which led me to, I think, a lower average WPM.