I tried using it with eeas, creatine, etc. pre workout with humalog. It worked great. I talked about this on another board and someone blasted me for pages swearing up and down that waxy maize wasn't worth shit and that I should use dextrose. Ok, so I gave it a try. The results? Dextrose tasted better (covered up the taste of the aminos!) but the actual physical results were exactly the same as far as I could tell. As long as the carb is fairly fast acting (and most carbs actually are, compared to protein and fat) I think it's fine.
My favorite right now is using the cheap dextrose/bcaa/creatine mix they sell at walmart for 12 bucks. It tastes good and it's cheap enough.
Someone asked about pre-workout carbs and it was answered pretty well. But, I wanted to throw in my experience. Again, I use carbs/protein/creatine etc with humalog 5-8 ius, depending on need. When I did this post workout I recovered quicker than not using at all, but I also held excess water and put on some noticeable fat. When I switched to 20-30 minutes preworkout (humalog shot with carb/amino/creatine drink) the results were great: better pumps, more glycogen retention/fullness afterward, no excess water, actual fat LOSS. Don't ask me why the fat loss, but I was surprised as everyone swears insulin will make you fat. This last cycle (8 weeks of tren/test- only 700mg/week total, with some small amount of orals thrown in and my humalog protocol) I gained over 30 lbs of bodyweight- not all lean, but not horribly sloppy either.
For anyone considering insulin, like everyone else says, you HAVE to be careful!! It's not something to fuck around with! Research, research, research and then take it as slowly and in as small of doses as possible to test your reactions!! Always have some protein/carbs on hand and access to something with fat in it if all else fails.