I haven't been on it for years, but for about 8-10 months. I've lost about 35 and kept it off pretty easy, especially considering I haven't worked out in 3 months since moving and taking the new job, and I haven't gained a pound. (That will change tomorrow morning, a strict workout begins again)
As for the diet, I think the key is to look to stay as natural as possible. The supplements and low carb foods out there will not only eat you out of house and home, but the government has no guidelines in how each company calculates 'net carbs'. Some subtract sugar alcohols and fiber, and some get even more creative.
My diet consists of a lot eggs, bacon, meats of all varieties, and lots of salads (stay away from carrots). Reading the book does help a lot. As for drinks, I drink a lot of water, Fruit2o (fruit flavored water), crystal light, and too much iced tea (unsweetened, but sweetened with Equal). The increased caffeine is bad for metabolism, but I haven't had a soda in over 5 years, so it limits a lot of my options. The Hood Low Carb Regular and Chocolate Milk are unbelievably good.
Beer is a tough one, and I don't remember a low carb King Cobra. I have gone from drinking straight Guinness to Miller Lite and Rolling Rock Green Light. As for Michelob Ultra, stay away from that watered down piss. It makes Miller Lite seem light a fine pilsner. Another thing I drink to stay happy is Bombay Gin and diet tonic, as well as Skyy with diet tonic, lime juice, and topped with whipped cream (stirred well). It's a nice sweet island like drink. (Not something to drink with the guys

)
The weight drops off really quickly at first, and then you tend to level off. Those that know 'the Zone' diet understand that your body will plateau at points until you do something different to get through the plateau. Changing workout routines will usually help if you get stuck at an undesired weight.
Best snack: Get yourself a Fry Daddy, fill it with Canola oil and get it ready to fry. Cut up boneless chicken breast into 1.5" cubes. Roll the cubes in grated Parmesean cheese and throw them in the fryer. Meanwhile, heat up some Hooters Wing sauce in a pan. Hooters sauce is available at most grocery stores, it's made with butter, and has *zero* carbs. I usually do a half and half mix of mild and hot sauce. Then after frying the chicken, drop them in the sauce and put them on a aluminum foiled baking sheet. Repeat until you have a nearly full sheet. Then dribble more wing sauce over the batch, and throw them in the oven for 10 mins at 350 degrees.
You'll end up with some yummy boneless buffalo wings, that are not only very low in carbs, but tastier than anything I ever had at Hooters. - AB