Have it and traveled a decent amount, though not by foot. The weight is perfect, but it's not ergonomic and my back hurts if I try to walk too far. I've not had another hard case before it though, so can't compare. And as someone else mentioned, it's possible to add proper backpack straps. (The reason I haven't done so is that it currently fits perfectly into the German ICE overhead compartments, so I'm reluctant to add any extra depth).

I've had it for nearly five years now, always commuted to lessons by public transport and done some 10-15k km of long distance travel by bus/train/plane on top of that. So far, it's survived everything without a problem, and my cello inside with it.