In industrial by tool bag sits on the cart with all the parts. If I need a lot of tools, I can throw a small husky electricians pouch (sits in my rolling bag on its own belt empty for when needed) plus a cheapo nail apron for odds and ends. Working off the cart along tools go in pockets. If more than a couple tools then yes the occidental 5053 butt pouch is fantastic.Just recently swapped from a full set of saddlebags loaded with every tool I've ever owned, to the Occidental 5053 butt pouch with linesman's, *****/needle nose depending on the day's work, razor knife, sniffer, a small ideal clamp meter, and an 11-in-1. If I'm roughing in I add the 77cent cheapo depot canvas apron and a hammer in the hammer loop of my pants. My back has already improved. I was a fan of the saddlebags and suspenders for the first thirteen years in the trade, not so much anymore. To each their own.