In reply to Tom Bowen:
I bought a pair of Meindl Borneo (leather lining) in the Summer. I probably saw the same posts as you, but I have absolutely no grounds to question the build quality of them - daily wear for about 3/4 hour and occasional longer forays, in all manner of mud, sandy, rocky ground, up hill and down dale. Not a mark on them. As a plus, the sole seems to be very tough, unlike some of the others I looked at.
The leather is plainly neither as thick or as tough as that in Nepal Extremes for example, but I don't want it to be. I can see no reason to question fitness for purpose - in my case, durable walking boots with a leather, lining, no Goretex and that will take all manner of abuse but are not going to be worn with crampons.