Ok, this may sounds nuts or at least obsessive. I have a couple of bench strops that have diamond spray and chromox. I am carefull to keep them in bags so that the diamond doesn't get on the chromox and visa versa. I'd like to try a hanging strop with diamond on one side and chromox on the other. I'm thinking of a leather strop for this. Do i have to worry about one paste migrating over to the other side? How careful do I have to be to prevent such a thing?