Hi Katy,
I am a LC veggie (although I do eat fish), my fiancée is a meateater (who has recently cut carbs) and we have 2 healthy boys who eat anything ! The 2 different meals thing isn’t usually a problem as the kids tend to eat early and my other half has what I have with added meat.
The kids eat fairly well and they don’t have carbs with every meal, cereal for breakfast ( they love there bacon on a weekend !) veggies, protein, cheese bits, ham, cold sausages and yoghurt for lunch (it’s what they ask for and the occasional pkt crisps !), chicken, fish fingers and beans or something for tea, sometimes with potato, sometimes not. They eat fairly grown up food, chilli, dips, roasts and often asks for that rather than “fast food”. Any dairy products have always been “high fat” – full fat milk, cheese etc to get their calcium.
They have always eaten sugar free sweets and treats and they have a lot of “refined” carbs in their diet. We have also been told by friends they constantly “preach!” about the virtues of sugar free stuff and clean teeth ! (they are only 3 and 5 bless them !) Strangely enough they haven’t eaten all their “real” easter eggs, they ask for the sugar free stuff !
Without thinking I suppose their diet is heading towards low carb and certainly a lot less low carb than their peers and they have never complained !
I suppose it is all about educating them early, they are healthy and full of life so we must be doing something right !
Good luck