I have abandoned cumbersome walking boots for these shoes and I have been really happy. So far I have walked the 92km Great Ocean Walk in Victoria, Australia. The shoes were comfortable on a mixture of sandy beaches, trails and rocky coastal sections.
I also wore the shoes for a four day walk in the rugged Northern Flinders Ranges. This involved clambering up and down boulder strewn creek beds and loose, gravelly peaks. I really appreciated the grippy soles. Especially in the mornings when the rocks were covered with dew.
The shoes were comfortable and felt very light. I carry a pack ( Go Lite Pinnacle) of around 14 kgs for a four day walk.
The transition to ultralight backpacking has been a revelation. I am enjoying the same kinds of wilderness experience with a lot less toll on the body.
I have just bought a pair of mudclaws and will test them out on a three day walk on a coastal trail in South Australia.