Sawzall vs angle grinder

I know certain tools have their advantages over another, and vice versa. An angle grinder can cut, grind, sand, and use a wire wheel, where as a sawzall is pretty much only capable of cutting. Some of the freaks might find "other uses" for them at the expense of hospital bills. This question is mainly focused on the cutting aspect of both since a sawzall is made for cutting and pretty much only that.

At what point is it better to use a sawzall or an angle grinder over the other for cutting? The sawzall is a good way to shake things up after getting a beating to the knuckles and or the gut. The angle grinder is a good test for your safety equipment and getting things a little sparky. If you own both, when do you use the other tool? I don't own an angle grinder, though I've used a couple. I do own a sawzall however. (This is definitely not an excuse to get another tool for various shenanigans...)