An excellent post Turbo.
I do own one of those cold steel shovels. soon after I got it I got rid of the short handle and replaced it with an ash staff tapered at one end for the socket to fit on.
Not riveting the shovel to the handle lets the two go separately.
The handle is my walking stick and the shovel head goes in the pack with other geotools when hiking and looking for rock samples.
A handle by itself is almost easy to stow, the head by itself is quite easy to stow.

I use the same strategy with other shovels and don't rivet the heads to the handles. If you insert the handle in the socket and bump the but end of the handle on something solid they tighten on very well.
When you want them apart you drive the shovel off the handle. I usually just slam the shovel backwards against something solid (like a rock) to get them apart.
I have never had the shovel heads come off the handles when I was using them.

The adze eyed picks are the same idea. They are meant to just jam tight on the handle with a smart bump against something hard and come back apart for stowing away. They are not meant to be riveted or wedged (unlike axes).

The shovel in the car is a normal round point shovel with a loose handle. The handle on it is about 6 inches shorter than normal so it fits in the trunk easy.
It might not be the greatest snow shovel but it will work on almost anything that can be shoveled.
I prefer the solid forged shovels to the stamped ones but that is just personal preference. Most people like the stamped metal shovels because they are lighter.