Flips Suitable For Municipal Trade Tokens/Exonumia?

The protection question is answered by putting the 2x2's in and archival quality album pages.
That way, each 2x2 has individual protection, and the items on the album page are much more easily seen as a group.

I don't have to bother with binders; I use old four ring trade sample binders, that I can get for free. Four ring binders are better than three, because there is less stress on the ring holes in the album pages. 20 crown size coins can be heavy! For this reason, I store all of my binders horizontally.

I don't use boxes to store my 2x2's in, because the coins inside each 2x2 can still rub together, and can damage the thin Mylar film against the rim iof the coin (in this case, token).

Hard plastic boxes are better suited to slab storage.

I prefer the cardboard 2x2's because you can write all of the attribution information on it, that pertains when the coin / token itself that is being examined.

Flips are probably more suited to boxed storage, which is more compact.