If I have items from 2 professions already and I unlearn them what happens?

If I have items from 2 professions already and I unlearn them what happens to the items I had already crafted? Is it possible to:

  1. Learn engineering, grind 475 helmet, unlearn engineering
  2. learn tailoring, grind 470 gloves + legs, unlearn tailoring
  3. Learn jewelcrafting, grind 470 ring, unlearn jewelcrafting
  4. learn alchemy, grind trinket,

thus giving me lots of profession items? Or do I lose the crafted items once I unlearn?

You don’t lose the items but they require a very high level in the profession to equip.

If you have them on they will “red text” out and while they won’t unequip they will no longer be giving you any stats.

Right ok, thanks for this. Almost made a massive mistake.