They're vague about the diffo between "components and parts" vs "accessories." But keep in mind that the statute lets them regulate both. They could issue another proposed rule later, and ban EGO carrying cases and Provari tee shirts. That's not as funny as it may seem: you can't get "Marlboro" gear anymore.
Anyway since the statute lets them regulate both, they can draw the line anywhere they please. Zeller has said that "components or parts" are "intended or anticipated for use w/ a covered tobacco product." Does that refer to Provari tee shirts? Probably not. Does it include all the equipment that we currently use, including drip tips? Yes, it could. Of course they are not going to regulate 186xx batteries, that's just silly and impractical because they have so many other uses. Ditto PG, VG, water-soluble flavorings.
It's the stuff that's essential to and unique to vaping that they can (and most of us think will) go after.
Roger,
I guess one important difference is that "components and parts" WILL need to go through the certification process, whereas accessories will not under the current plan. So, while ProVari T-shirts are not safe forever, they would seem to be safe for now. Whereas EVOD heads are definitely in danger.
I can get tons of Marlboro gear from my basement. I'm not proud of that fact.