My husband's OP/TECH strap has logged around 100,000 miles around the world,  mine too has been going strong. All our bags including our daily computer bags have these.

We don't check in bags and when you have to sprint across terminals at Heathrow or O'Hare, your shoulder will thank you.

He gifted one to his boss and I'm buying more as Christmas gifts 'cos once you use these, it's impossible to use regular straps.