Need help about specializations!! Someone!

Games Other Halo
1

So I have obtained a 50 and I want to go to another specialization, but I need answers.

QUESTION
1: Will I keep my armor?

  1. Will I keep my emblems?

  2. Will I keep my loadouts?

  3. Can I SWITCH between specializations at anytime? (MOST IMPORTANT)

  4. What things will I gain?

343i, you are welcome to answer this question. Anyone with information is welcome.