What you shouldn't do is re-use bottles for different solutions (e.g. developer in a fixer bottle) - ESPECIALLY "in reverse." That is, you might get away with storing stop in a developer bottle, but I wouldn't even consider the reverse.
Besides, even though "photographic containers" are "expensive" - it's cheap enough to just buy a new one if there are ever any doubts. Personally, I prefer brown glass bottles with caps, but inevitably we all end up with those "Datatainers."