Any stand outdoors has a risk of blowing over, no matter how heavy or light. If you walk by an outdoor film set, every light stand is sandbagged, and they tend to be pretty massive stands. As I see it, it's easier to carry compact lightweight stands to the location and weight them than to transport heavier stands and weight them, but then I'm usually traveling around New York by public transportation or by taxi. If you're moving everything in your own vehicle, you've got more options.