My .02 is...
Something like that should be considered a permanent accessory kept in your bike, 'cause the probability is high that YOU would be the one in need of those items vs. someone else. Something I learned in the military many moons ago, called the "Golden 15 minutes" (which I know has changed to something else), basically means that the emergency care given to someone within the first 15 minutes, often is the determing factor between life & death. I know, of course your assuming that if you went down, there would be someone on the scene who could actually use the kit, but I will tell you, I would rather expire with someone trying to save me, than someone just standing around holding my hand ! Just the way I see it...
Steve.