Cargo Pants
Practice it works in
Used mainly in the military, sports, fishing. Any practice that requires you to keep and have access to handy objects quickly.
Its specific use
Part of the battle dress first worn by members of the British Armed Forces in 1938. The large pockets were designed for
Mobility
Pretty mobile considering that you have to wear pants. It’s just a bottom with many pockets.
Utility vs Fashionability
If Tim Gunn says cargo shorts are is not fashionable, it’s not. Never argue with the godfather of fashion. But cargo pants are making a come back in fashion
Carpenter jeans
Practice it works in
Carpentry and construction.
Its specific use
Made with tougher materials such as denim and canvas, the pants designed to withstand the wear and tear at the workplace. The loops and pockets enable easy access to the tools keeping their hands free. The hammer loop was designed on the left leg to hold the hammer but it often falls out or bangs around the leg. Wider and thicker belt loops allow for a wide work belt that holds other tools.
Mobility
Pants are pretty mobile. Unless you are carrying a ton of tools and gizmos that might hinder the way you walk.
Utility vs Fashionability
I would say both as you cannot deny the functionality of pockets. Workwear and 90s fashion are in this season so pieces with an updated and modern fit (see Calvin Klein)