5th Warbank Slot Achievement should be a FoS

Gameplay Achievements
1

Hey,
It looks like buying the 5th warbank slot is going to be an achievement, which to buy all the slots will cost over 3mil.

Please make this a FoS rather than the largest gold sink achievement ever please.

2

Hmm, Wowhead reported a few days ago that it seems as though the achievements for buying the Warband Bank tabs are NOT being awarded now.

EDITED TO ADD:

While I can track the achievements, the one for purchasing the first tab does NOT show as completed for me. So it does seem that they are NOT currently being awarded.