let me go back and say that a low-carb diet will help a person lose body fat when used along in a caloric deficit. this is why many bodybuilders cut carbs pre-contest. but there is also a reason why they don't cut carbs during the off season. as i said, carbs = energy (simply put).
"While the low-carb diet can help you get ripped by cutting your bodyfat levels, it also can cost you valuable muscle size. That's because stores of glycogen (stored glucose from carbohydrates) inside your muscle tissue and liver are compromised when your carb intake is too low. And with low stores of glycogen, it's difficult for your muscles to exert the sustained, high-intensity effort required to lift weights. Essentially, you suffer a decrease in strength, your training poundages drop and your muscles get less stimulation, which leads to muscle loss."
-Lee Labrada, Muscle & Fitness
"Adequate supplies of carbohydrates are essential for a number of reasons... Carbohydrates are a primary form of energy. The carbohydrates stored in the muscles as glycogen are what allow you to do heavy and intense weight training... The reason that carbohydrates are so important as fuel for intense training is that most exercise like this is anarobic... so when you do a hard set of weight training or run a 100-meter sprint, the source of your energy for these efforts is primarily carbohydrates."
-Arnold Schwarzenegger, New Encyclopedia of Modern Bodybuilding
anyway, i guess my second reson in my above post isn't great if the guy is looking ONLY to cut body fat, but since i assume he is also trying to build muscle (since he is a member of T-Nation) and keep lifting heavy (since he is a powerlifter), i recommend some carbs. i also forgot to mention earlier the importance of carbs in health and recovery.
now as far as my comment being bullshit, i could probably find 1000 other quotes explaining the importance of carbs with weight training. so eengrms, why don't we do an experiment where you cut your carbs for a sustained period of time and you can get back to me and let me know how productive your time in the gym is.