<< Has anybody tried the waxless toilet things that you get in HD and Lowes? >>
No, I haven't, nor am I likely to.
Like most people, IMO, you don't mess with success. Wax rings in properly
installed systems have functioned perfectly for decades. A rubber seal lacks
the ability of the wax to compensate for the inevitable variations in the
porcelain pot, and unglazed pots would be even less certain. That's my nickel's
worth (adjusted for inflation).