Gary,
Gave some thought to adding one when I took delivery of my unit in 2019, but didn't pull the trigger. May regret it someday, but no problems with the macerator to date. Storage was one of my concerns. I guess I could find somewhere to stuff it, but I've already got a lot of (probably too much) "contingency stuff", and without installing a tube (or piece of PVC) like Ron references, there's really no remaining outside storage for it.
I rationalized the decision by saying that it's a pretty common item, and I probably could find/acquire one within a day or so if my macerator fails. So far I've not had to test that theory!
Mike