Shaman transmog

Hello there,i 've been playin enh shaman for a while and the time to transmog my gear has come. I want to transmog my 1h axes to 1h swords. But many people told me that i can not xmog items i can't equip. I checked a video of a guy in Blackrock though that he had the warglaives xmogd to his axes. Now is it possible for me to transmog axes to swords? It is possible only for glaives? Or its only a Blackrock thing?

Generally works like this

1H Sword <> 1H Axe <> 1H Mace
2H Sword <> 2H Axe <> 2H Mace

Polearm <> Staff

Bow <> Gun <> Crossbow

Daggers <> Daggers
Fist weapons <> Fist weapons
Wands <> Wands
Shields <> Shields

But you do have to be able to equip it as well, so exceptions apply, such as paladings cant morph polearms in to staffs.