I have been on CKD since January with great results. I am in outside sales and dont always have time to come home for lunch or sit down at a decent restaurant. You can however eat low carb with a little planning and strategy. The trick is fat. The more fat you eat the fuller you feel, I think a great snack is a combination of fat,protein and fiber all of which keeps you full longer than starch and will go along way in a caloric deficit in losing weight. I like the following to acheive this
cheddar or colby cheese cubes+raw veggies(broccoli,cauliflower,etc)
beef jerky(homemade is best, some store brands have alot of "extras")+almonds,walnuts,etc
pepperoni(salami,think fat) slices+ rawveggies
string cheese+almonds,walnuts,sunflower seeds,etc
leftover bacon(just cook extra)from breakfast + raw veggies
smoked salmon+ raw veggies
boiled eggs(or deviled eggs)+ raw veggies
just a few ideas to get you started, remember to not snack blindly because calories are calories, if you are looking to lose wight increase amounts of veggies to stay full on fiber. I find however that if I am taking in 60-70% of my cal from fat I can train hard but am fuller much longer. Play around with it and see what works