Griffin thought it was so cool for Luna to wear a tug.
We went to walk around a town on the way to agility last week. Halfway through the walk, her tail came up. She was scanning less. But she was still jumpy about people and whuffed at someone 45-60' away. We turned and went the other way.
The next day, I took her to a different place that she had also never been to. Same number of people. And same behavior.
So...the thundershirt didn't make much of a difference at this point of time. She looks a bit silly in it, she's so hairy but is actually a small dog underneath.