The MRCE is totally wearable. Do a google image search, or even look around this very board, you'll see troopers with modified MRCE helmets.
It just takes a little searching.
It says it's made from fiberglass, like the pink one. Usually when you see the words fiberglass it's a recast.
The details are pretty soft. And to me the frown and brow look messed up, along with the molded-on ears.
You could possibly wire the button differently with an extension of some sort so you could have it in the palm of your hand and activated when you press it against your blaster or something.