I am traveling internationally from USA 3-12 months for business. Bringing a few SRs. I will have two of them SR honed by the legendary Lynn. How long does an edge keep its post hone peak sharpness IF it is not being used? I will use another for the first 3-4 months then bust the SRD honed SRs out after that. I won't have access to a hone stone, so I want to rotate a new one in every 3-4 months. Thanks in advance...