The thing about Lowa renegades is that, if they fit you, they do feel like slippers, and you can do a long walk with them straight out of the box. No, they don't last for ever, but I have had two pairs and they aren't much worse than other lightweight boots I have owned. I would say I did between 1000 and 1500 miles in each of the pairs I've had before they got a bit leaky and got demoted to beach boots, when they did another year or so. They are simply the most comfortable boots I have ever owned, and in the end I decided to trade longevity for comfort.
I switched to Scarpa last time I bought a lightweight pair of boots, but will go back to the Lowas next time.
I also have a pair of Altberg tetheras, and I have to admit I don't wear them nearly as much.
The trouble is, in the end you need more than one pair of boots......