I have been tempted to try this, but apparently you must get the Pro version, the cheap one is missing a must-have feature (backing up the training you've done if I recall correctly.) Also you need a good mic, and preferably a USB dongle sound card for the mic input (avoids the problem of electrical noise in a way that no internal sound card can equal.)
All in all, not something to try on the cheap. If you want to evaluate the method you need to do it properly.