Robert, you mentioned meat+veg pre and post. Is that enough carbs? I mean how many pounds of veg do you eat? :)
Having diabetes in the family, my gut instinct tells me that maltodextrin is not the best idea. It may be an irrational fear.
Well I do a carb backloading diet, which basically means I eat low carb until after I've trained. Basically my set up is something like
-Protein shake for breakfast (40g of protein)
-Snack on meats and nuts/berries in afternoon, usually get 20 - 40g of protein, few g of carbs, nothing to worry about really
-pre-training meal of meat and veg, usually a couple of steaks (comes to 60 - 70 g of protein) and about a pound of broccoli. Broccoli is a low-carb dieters best friend. No carbs with this meal.
-post training meal of meat, veg and starchy carbs. This meal is always enormous; usually works out from 60 - 80 g of protein, with a TON of rice. I have no idea how many grams of carbs it is but it's a lot. On days where I've trained legs I usually wash it down with a lucozade (I know, I know...) for the extra carbs. This meal is so huge that for a good hour or so afterwards I just kind of lie there, rubbing my stomach and groaning.
-final meal before bed, usually something light like a protein bar, couple of bits of fruit, a cup or so of berries and a cup or so of nuts. 25g of protein in the bars I eat, dunno about carbs/cals
on days I don't train I usually fast for a few hours in the morning. I'm quite lucky in that my body seems to be pretty good at fasting and using fat for energy. I could get up at 7 and not need to eat anything til 3 quite easily. I also seem to do alright with low carb diets, some people would probably need more carbs than I eat.
Also once a week I have a ridiculous cheat day where my carbs go insane. It gets pretty decadent usually.
As for the maltodextrin, remember that after your workout your insulin sensitivity is the best it'll probably be all day, so the maltodextrin probably won't do you any harm. I'm not saying you need it necessarily, but I doubt it'll do you any damage. Don't go all carb-phobic on me now!