I eat fairly high carbs per day for Atkins OWL (about 100g), but if I eat more than 5 grams (cuppa tea with sugar), it is in a major meal with protein and fat included. Also I choose low GI foods, like low starch veggies, barley, seeds and berries. For all that, I am able to maintain ketosis. Basically I am eating as much carb as possible while maintaining ketosis and weight loss. I think the balanced meals and low GI are a big help.

I still count carbs by the gram though. Often at 130 grams of carbs I gain weight. Most likely it is simply glycogen plus water but it is disconcerting.