that's interesting destroyah except i more or less completely disagree
whilst digestion does use some calories i think it's negligible the difference between what you're suggesting i.e. meal timing or what it is, if you have any studies to this i'd like to see (edit: been searching for a breakdown of how maintence calories are spent.. not found much.. any hints?)
i have come to understand the 4-7 small meals a day a myth of past decades, what matters is overall daily intake and timing is not important, and also that to lose weight you must be in a calorific deficit (below maintenance) like to gain weight you must be in a surplus
hence many new diets since as intermittent fasting, lean gains and so on where there really is no "window" as such like "you must drink your protein shake within 20 minutes of working out" which is just lies
maybe one day i will try your method of keeping the same calories just switching out carbs but for me i'm sure its a simple equation of calories in vs calories out for weight loss, plus i want to do it quickly
the thing i do agree with is that high protein is good to keep as much muscle mass as possible