Thanks Russell!
I finally switched wheels on the ZX2 today!
With rear covers back on
I have to say that I absolutely fell in love with the difference these wheels make. I can feel that my rolling resistance has decreased, and my acceleration is better. DWL is easier since there is less speed loss in hilly terrain. All this means that my fuel economy should start heading towards the upper 40's
And don't worry, they have smooth covers on them as of now