The problem with training against kicks is a bit like the problem with training against punches. If the person delivering it is truly committed and follows through like an out-of-control drunk, then it is fairly easy to deal with them once they throw all their weight in your direction - and that's great for basic training, I suppose.
However, good kickers (of the karate, TKD or whatever variety) are an altogether different animal. They don't easily lose their balance or just deliver a single blow the way many here would expect.
I'm not by any means suggesting that these people are the types who would get their kicks (yikes!
) by getting into street brawls with the decent people here in this forum. Still, it's something to think about - trains you better for handling the committed drunk (an oxymoron? Or just a moron that is large like an ox?).