while ivory probably isn't the best material for a carry piece, there are more than a couple that have been carried and used in the field, some by notable owners. Here is one that was carried in the Korean War according to the original owner's family and accompanying provenance.

Nevertheless, the handle has held up well with checking but no indications the handle would fail. This is particularly interesting as Korea has some rough winters. I say this knife (and sheath) is the definition of one with "character".