Obiwan9962, I haven't tried the gluten as a thickener. Guess I'll have to forego that idea.
I've used arrow root before (but it does have significant carbs). Cream's the easiest (again carbs and fat for those who are cutting). Gelatin is good. Sometimes you can just cook a sauce down some. May still seem a little watery, but the flavor intensifies. At least, that's what I do when I feel lazy!
I've hesitated to use soy flour as some don't care for its flavor.
Never seen the Chinese stuff. Almost sounds like it's sold as a wheat version of tofu?
I've used arrowroot for thickening. It has more carbs than I like, but if you divide up a TBSP among X servings of sauce/gravy, it's not as bad. Not sure of the GI here (or for the wheat gluten either--wonder if it's the same as flour or different).
For any who are curious, you can buy wheat gluten for baking:
Hodgson Mill Vital Wheat Gluten
1 TBSP =
30 cal
0 fat
6 Protein
2 Carbs
1 Fiber
Vit. C 40%
"Not a significant source (contains 0% daily value) of Fat, Cholestorol, Sodium, Sugars, Vitamin A, Calcium and Iron"
It's used by professional bakers and with automatic baking machines. I use it to add gluten to flours that lack the gluten provided by wheat flour (e.g., oat flour) when I bake.
I detest some of the other suggested "low carb" breadings, so I go ahead and use the gluten instead of soy or protein powder or *shudder* pork rinds.