According to the doctrine, yes it was only used as such. The debate comes in when we talk about the actual upgrade itself, and what it is. Modular Flare and Chaff Dispenser, aka MFCD (E is just Enhanced for EMFCD). In my book written by the pilots, there is this one particular page that specifically shows both the tail slots, and the EMFCD pods side-by-side. One image specifically describes the tail slots as “flare catridges”, and the other as “chaff catridges”.
It’s very delibarate wording and not just an interchangable term, and at the end of the segment explaining “Electronic Warfare” it specifically says "The total capacity, excluding jammer, amounted to 24 flare- and a maximum of 154 chaff cartridges.
The 24 flares that were always there, were the tail cone ones and the wing root ones, and were not modular by design (essentially the large countermeasures in the game). Now this could also refer to the fact the equipment of the jammer meant -55 in capacity as the jammer pod could not fit cassettes as well. Yet as seen in the images at the bottom here, the left one is referred to as flare catridges, and the right is referred to as chaff catridges. And yet they look to be the of the same design, or modular if you will, it would imply that they could be swapped for flares if so desired. I do not know the exact make of these cassettes, but I am starting to believe it may be Terma. I found a listing in the Aarhus Archives that were images of products from the 80s and 90s, but those were restricted access. Furthermore, on Terma’s own website, they state they were involved “From the Draken aircraft to the F-35 (Lightning II) fighter aircraft.”
Wikipedia (not great I know, but bear with me as I delve into finding answers) states they supplied critical electronics for it in the early 70s. This predates MFCD and EMFCD, but it at least gives them some connection to the entire lifespan of the aircraft. It’s something I am trying to dig into for a concrete answer, either through pilots, technicians or historical images.
And as I write this, I just discovered this video which shows the slots for the EMFCD wing root flares, albeit empty:
So we are slowly advancing somewhere!