Yes.
Two that match?
Not neccessarily but its nice to have compatible ammo and mags if possible within a worn brace. Micro Glocks back up full sized Glocks nicely and can use the larger weapon's mag.
Andrew Jackson *always* wore a brace. Shot an asssasin off the balconey of the White House, I recall.
Making you somewhere in the neighborhood of 200 years old. Congratulations. :-)