Maybe a modder or knife maker could whip you up some handles. I seem to remember someone selling ready made grips for swamp wardens, but I haven't seen anything about scrapivore handles.
I had a Mashed Cat sheath for my scrapivore years ago. It wasn't a LE version though. Azwelke or BuyBrown may also be able to help you out for kydex.
Someone else will have to recommend a leather worker if that is what you'd like. I haven't bought a custom leather sheath before.
If no body has an LE, you might have to send in the knife or at least make a template, but that probably isn't news.
Now you got me thinking and wishing I had kept my scrapivore.
EDIT: Too much fog in my brains