Sure, it might be a good idea - but with Google's cache of the page, you can (most of the time) see what the bot saw anyway.
And since they have such a huge database, if you really want to spend your time looking for 'cloakers' instead of making your business do better - Google has already provided you with just that: a way to see through their bots eyes.
Of course, cloaking is something that even Google, MSN, AOL, and many other huge corporations do now.
At this point, I wouldn't be worried about someobody else's cloaking -
I'd be wondering, can this technology help me make my business grow. It's a tool, like any other.
Consider a hammer, or a chainsaw. Used properly, they are wonderful.
Used the wrong way, and a hammer (or chainsaw) can lead to an aweful mess, with much pain and suffering.
Now, considering that cloaking is like this hammer or chainsaw, and given that some of the largest internet companies in the world are cloaking their sites why would you be worried if somebody else is using a hammer?
It beats grabbing a rock, and trying to do it the 'old fashioned way', and since a hammer can save you time & energy that might be better spent on doing something more productive, I'd recommend honestly, learing to use that hammer yourself.
More knowledge is almost always beneficial - ignorance, however, may prove to be very costly indeed.