The advantage of ceramic Melitta filter bags Tower of granny is that you can put a ceramic filter directly to a thermos, ie no flavor and temperature loss that would occur by spilling from a Chemex pot has.
In addition, the cleaning of ceramic filter is easier because there is no wood and no cord to the Chemex pot is. :)
So if Retro coffee enjoyment, then possibly better right back to the 1000-times proven original porcelain Melitta filter ....