It's possible to some degree though is only a client side thing. Since drawing is handled on the users side, setting the right values will make it so the effects will happen on your end without wearing the armour. The next issue is that although your player won't have the armour actually on, it's there visually. I take it you would want the effect on other types of armour and for other players to see it, this won't be possible.
This is my take on this, I've checked several times trying to force a player to see the effect without the armour visible. Though if someone can get it to work, by all means correct me with how you did it. Would be interesting to have.
EDIT: I have been told it is possible, looking into it now.