I made the mistake of buying a ZR-7 a few months ago, to use for commuting as the article suggests. As the article correctly points out, they are cheap - for good reason, since they're not very good. Superheavy, ponderous handling but with a reasonable amount of low down grunt. Good looking bike too.
Having commuted on the likes of the Bandit 600, Hornet 600 and Transalp, I have to say the ZR fell far short of these three bikes, it really was no fun at all to commute on. My mistake any, should have had a testride first! Needless to say, I got rid of it - the only bike I've owned for less than a year.
My suggestion would be to pay the extra few hundred quid and get a Bandit or CB500. Or CG125 or V-strom - these would make excellent commuters!
As for the ZR-7 being "nimble"? You must be getting confused with another bike. Of the 10 or so bikes I've owned, the ZR-7 is the least nimble along with my KH250, which beat the ZR hands down when it came to fun.

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