I have been a Belleville customer for 10 years and have used their boots on 5 deployments. They make excellent boots that stand up to abuse and the 330 STs are no different. This boot has the Vanguard "running shoe" sole which really feels like a pair of sneakers. The tread on the sole is designed for flat surfaces at offers little traction on dirt or loose surfaces, but I bought them because of the polish-able leather. For those buying Belleville boots for the first time, get a half size smaller because they tend to run a little big. The steel toe box is extremely roomy and comfortable. I don't have wide feet and wear a regular width boot and these are roomier than most. I've owned these boots for over a year and these are my most comfortable. These boots aren't waterproof but rain is okay as I have a light coat of polish on them.
It's too early to comment about durability, but they feel great. They are well built. Doubly stitched. Quality leather. Solid construction Also, made in America!!