They look to be new out so can't comment on them specifically. I have several pairs of Z6s and renegades both are mids. Almost always in trousers now and that's enough to keep the rubbish out otherwise id have gaiters on. They definitely don't like siding down scree, which is why I have multiple pairs now. The stitching in them all goes in the same place. Waterproofing is excellent on them until you pierce them with a needle to repair them. Both very comfortable but where they differ is weight. the Z6 is a 20kg+ boot while the renegade is a 5-10kg boot. Load your pack up and the renegade won't handle -after 10 odd km on mostly flat ground with about 40kg I had large blisters on the pads of both my feet. The Zephyr is a 15kg boot so I'd expect much better performance than the renegade. They do look like an improved lite version of the z6. I also found the propriety sole in the Z6 slippery in the wet compared with the soft vibram in the renegade.
https://lowa.co.nz/collections/task-force-men for weight comparison.
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