I bought my Bhutans after getting sick of returning my leaking salomons and they have done exactly what I wanted them to do. They are extremely waterproof, have good grip and always feel reliably sturdy. I think I've had mine for about 3 years, not sure how many miles they have done but I'm usually out and about every fortnight or so with a few weeks of walking holidays on top. They are now showing signs of wear but I feel that I've had my money's worth and there is still hopefully a fair bit of life left in them. Never had wet feet (except from sweat on long, hot days and when being too lazy to put my gaitors on and sinking in bogs!) For a leather boot, I've found them really comfy. On longer, "less rugged" walks they are probably overkill and can feel a bit heavy at the end of a long day. However, I can't complain as I don't usually do that much walking on the flat and didn't buy them for that purpose. I'm happy with how they have performed and would be happy to buy another pair when they eventually die.
Also, I know it's not recommended but they have been fine with flexible crampons (I used grivel g10's). I only do "easier" hills in winter and generally tend to stick to hills that don't include scrambling and don't have really steep gradients. They might be fine with crampons on tougher hills too, but I'll leave that for someone with more experience to comment on!
