My original average speed in QWERTY had a range typically from 50-60 WPM (occasionally even higher, but more often toward the median), which I intend to at least match and possibly surpass in both Dvorak and Colemak. I am aiming for a rock-solid average of around 60-65 WPM, minimum, in both layouts with minimal typing errors. I have not yet given Colemak a serious amount of practice since I am still heavily focused on improving my Dvorak performance; as a result, my speeds with it are still very low. However, this will all soon change as I steadily approach my goals with the Dvorak layout and focus shifts to improving my Colemak skills.
The intention is for Dvorak to become my fallback keyboard layout, effectively taking QWERTY's former place. A combination of Dvorak and Colemak will be used on my own machines to maintain familiarity with each, and also to switch things up a bit. As the more common and widely available layout, Dvorak will be used whenever possible on machines I don't own, and QWERTY will be used sparingly (ie. a Google search or two of a few words length, max). Any time I need to type more than a sentence or two on computers other than my own I will be heading to the control panel and switching the keyboard layout to Dvorak.
Major progress updates:
Dvorak: My current overall speed tends to level out somewhere in the high-50s to mid-60s range. I have reached and pretty much surpassed my old QWERTY speeds. However, I feel that there is still plenty of room for improvement. I intend to increase this further, and it seems to be gradually happening all on its own since I have been using Dvorak as my primary layout.
Colemak: Currently in the early stages. Still quite slow, but getting noticeably faster. Accuracy also seems to be making a sharp increase. Speed tends to average in the mid- to high-20s. [Note: My Colemak practice can currently be considered to be on hold, though it seems that my performance when typing with the layout hasn't really deteriorated since I last practiced it.]
My keyboard collection:
Unicomp "Classic 101" Buckling Spring USB Keyboard w/ Dvorak Layout
Topre Realforce 104UW USB Keyboard w/ Variable Key Weighting
Happy Hacking Keyboard Professional 2 w/ Topre Key Switches