Thanks for all comments.
I didn't mean the ice was bad for appearance, but as a stones shader it is impractical for placement and render time ( the ice example is only detail .5 AA 5 and still took 8 hours - with higher detail with this set of ice shaders on stones becomes near impossible to finish a bucket). I haven't run across lots of randomly scattered chunks of ice just laying about in a "normal" landscape. I think better use of this ice will be on placing limited individual displaceable objects instead of more difficult to control random fake stones.
I think the upper 2/3 of the mountain sketch is ok, but in the bottom third lacks realism, so the foreground needs work to match the top portion.