I'm so confused

After reading the bulletin I have a question.
Do you have to wear the armour to use the perk?

If someone could please explain slowly and clearly to me.
I am very tired today and I think my brain is just not working.

in the meantime I’m going to sit in a dark room and get over this hangover.
Why I decide to go drinking on a work day is really beyond me great but terrible idea.

You do not have to wear the armour to use these special modifcations

NO.
Clear enough?

My understanding (and if I’m wrong, someone please correct me) is that you can use any specialisation with any armour. The unlocking of a specific specialisation is linked in some way to unlocking a particular piece of armour. Once you have them unlocked you can use any combo you want.

I suggest you watch This Video
Green Skull is very smart, and knows a lot about Halo 4!
He explains a good amount about the bulletin.