I don't know any DSer who doesn't ever eat carbs (though some are more careful about what type they eat than others). I sure do. I have some everyday. 1/2 bagel, bread, potato chips, pretzels. Not a lot, b/c I can't & b/c I always think protein first. If you don't you'll feel very tired and not good, believe me. I could eat an entire Pepperidge Farm cake preop, too. I can't now. I could prob. eat 1/4 -- it depends how big it is. Then I'd have to come back to it a few hrs. later. I do eat junk. I think I mentioned it in my earlier post. Just not as much and less often.
Like you said, you need to get all that protein in. I eat 80-120gr/day and it's almost always over 100gr. Then I try to drink as much as I can (I'm not great about that). Then a piece of fruit (I'd like to do at least two). Then some carbs. If not, I lose too much weight. One of the interesting things about the DS is that if you want to lose wt. you eat more protein and drink more. So if you don't have some carbs, many of us find we get too thin. Hard to believe, but that's a problem I'm having for the last 9 mos. or so.
RE: the protein: I have a ticker in my head. Now for the first 6 mos. I kept a food diary my surgeon's nutrit. gave me. Once I learned the protein value of most foods I ate, the ticker in my head just kicked into gear. It isn't intrusive, I just know it's running in the back of my mind what my count is. So a day I don't have enough protein at lunch, I make sure I eat a good amt. of nuts and/or cheese (I do most days anyway) or maybe drink a protein bullet. Like I said, it's not in the front of my mind any longer (it was the first couple of years) now it's just quietly in the rear.
BTW, I don't eat 'lean, healthy meats'. Neither do many DSers I know. That'll be your choice when you're postop depending on your cholesterol and what your dr. says. I happen to be a DSer who watches it more than most b/c everyone in my family takes a statin (but me b/c my cholesterol, lipids, etc. are so good postop) due to high cholesterol (and none are obese) and heart disease in the family. I generally don't eat the skin on chicken and only eat ice cream once a week. But others eat much more in the way of fats due to the malabsorption. But I do eat fatty steak & stuff like that.