I have been rolling my EZee front hub motor now for about a year. My wife has a Day 6 comfort bike, the concern that I have with the concept of combining the two is the angle/rake of the fork and the weight of the motor. I am not sure about the strength of the fork for those kinds of forces.

BTW, the EZee is as stated above "Strong, plenty of torque, a very good motor."
The Day 6 is comfortable, not my cup of coffee though.