I tried friction-based edge guards for a while, but they kept slipping off in my knife roll, probably because the 1303 is so thin.
So I bought some of these;http://www.chefknivestogo.com/fovimasa.html
And they're awesome. Been using them for about a year, haven't had any problems. Just make sure your knife is bone dry before putting it in or you'll be scrubbing rust.
Cleavers are sweet.