1. All I can say is we only have ONE glider the wife will take out of the house without a zipped up pouch. (out of 10 gliders.) she will put gizmo in her bra, he will curl up at daytime and evenings and sleep or groom. whether IN the house OR OUT of the house, gizmo will stay in her bra. THAT is the only test I can say, walk around the house for a few MONTHS!! If your glider stays on you or in your bra that is a start, ALSO our bonded gliders are much easier to handle, we can grab sophie or GUS very easy, they dont dart off or bite. Gus fell off me (nails just cut) and landed on the big dog once, I just reached down and picked him up easy. If your glider is not easy to handle I wouldn't even consider taking them out without zipped up pouch, ONE just ONE mistake can be a runaway glider.
Gizmo will stay with my wife ALWAYS, if she takes him out at store he only wants back in the bra.
Outside noises can startle gliders? be positive your glider won't run.
we also always bring pouch just in case.
2. I couldn't even bring myself to put my gliders in that type of potential harm. Just like I put them in zipped pouch out of house, I'm to worried they will run, I let wife do the bra thing.
3. take them OUT and about IN THE HOUSE. take to friends/parents house, take them out of pouch and test in a strange house. I take one to three gliders for a ride from cage to refrigerator for mealworm. they stay on me, but one or two look around alot, maybe for a place to jump.
in the end, outside and harness just come with to much danger for me to do.