why bother ?? you more then likely will be faced with up to 2 attackers, you spray it the wrong way, its clogged or too windy, or empty too soon, or worse it wrenched from you......Precaution....Location-Location and "Group" protection, and one of the best, a small "boat horn" on a carry chain......noise , loud and lots of it is your first, best defense
learn a few simple defense moves, and remember it must be a "instinct reaction, perfectly performed against your attacker" for you to be successful , while remaing somewhat calm"....thats hard to do when your scared to death THINK AHEAD ...remember with all the numbers of visitors harmed, look at all who arent !!....you will be fine