A bit off topic, but personally, I disagree. I, too, have tried having the surrounds at seated ear height, and the effect was such that they were too localizable. It's great for multichannel music (don't know if the OP is into m/c music), but not so great for movies/TV. It's generally recommended that the tweeters of the surrounds be two to three feet above seated ear height for the best effect. This might be more difficult to do as you're using floorstanders, of course. Regardless, SmoKnHot, if you find you like the sound better with the surrounds at ear height, that's what you should do!
cheers,
supervij