Do you think all these trapping supply dealers do anything special when storing lures In the off season?

Beav- I dont see this as an offseason storage idea, although it would work just fine. I see this as a way to carry them all with you and keep them organized. I keep all of my lures and baits in a 5 gallon bucket with a "bucket buddy" on it. They still get misplaced, spilled, broken etc. With this idea, they would all be neatly organized, easy to read the lids, not spilling or banging around getting broken and easy to see which ones are not in their place. I like the idea.
To each their own.

I use an ammo box with lift out tray. I installed a threaded bolt to keep the lid level when open so I can set the tray on it. This keeps all the lure smells away from the ground while making sets and allows me to access lures and baits at the same time. I have since added a 2nd bolt to give the lid more support. I've used this one for about 8 years.

Crafty, Archeryguy.