You could. I use gummy bears (main ingredient is glucose) from time to time. Just be sure to take in some protein so the spike can actually shuttle some protein to the muscle. I don't like soda, though, for a variety of reasons. But, if you wanted to you could. After all, it does spike insulin. I probably wouldn't do it all the time but that is mostly because I don't like sodas in general.

FYI, my personal muscle building post workout shake is this: WPI (whey protein isolate)(50+g), leucine (5-10g), creatine(5-10g), dextrose(20-30g), skim choc milk(about 15g carbs). If leg day, I'll probably up the dextrose a bit or eat the aforementioned gummy bears (or other similar treat).

I know quite a few people who do something like egg whites (beaters), WPI, creatine and fruit juice (mostly orange from what I've seen).