Well regardless what the states allow, its my humble opinion.
I don't and won't consider smokeless powder legal for use during muzzleloader season.
We have black powder, then we have black powder substitutes Triple Seven, Pyrodex, American Pioneer & Blackhorn 209.
Smokeless powder may be a substitute powder for use in the Savage 10ML, but it isn't a true black powder substitute, hence it isn't legal for use in my eyes during muzzleloader season.
Question, why would anyone not want to clean their guns?
I agree, smokeless powder is unsafe for use in the T/C 209x50 Encore, no question.
yooper77