Thank you all for making this site what it is: very comforting. Today was a teacher's only day at the school I work at. One hundred teachers in the gym, professional development. Kids were off for this. While walking amongst everyone as part of the exercise we were doing, my clip fell off. I didn't notice it until I walked back the same way and saw it on the floor. I grabbed my pouch through my sweatshirt pocket, picked up the clip, and walked out the nearest door to a bathroom to check and fix things.
The plastic end of the bag had stuck to my skin under my waistband, so it didn't dump out. I am so grateful for my good fortune, but the thought of how close I came to emptying a one-third full pouch in front of all my colleagues of over ten years mortifies me. All the things I've been through and have dealt with, and now I am more stressed about something that didn't happen :(
So I ordered half-inch Velcro dots and will see how well they provide an extra layer of security. The clips are very durable - I was amazed when I saw only one came in a box of ten pouches. I didn't think they would last, but they do. Today mine failed me - I wonder how common this is.
If anyone has any better idea than Velcro, I'm all ears. I will also post after I use them a few times. They were cheap - about $3 for 300.