Seems to be catching on at many such events. Two years ago, we went to the county fair, and I forgot I had a small pen knife with 1 inch blade. But took it back to the car.
Funny thing is, in one of the vendor display areas, they were demonstrating and selling steak knife sets and other kitchen knives!
There's enough demand for the clear purses that some designer bags are on the market for several hundred dollars and more. Even $1000+. Do a google search for designer clear bags and you'll be amazed!