Hmm, a new wardrobe hole...
But, seriously, I can see why you fell for it. Wearing the pieces separately would tone the jacket and pants down quite a bit and would be quite a bit of fun to style. But, I can see real possibilities for the total outfit the next time someone sends one of those "festive casual" dress invitations. And, if there is one person who could pull off a military galactic tuxedo, it would be "Una_verse", Galactic Warrior Princess...
If it didn't cost an arm and a leg, I'd be tempted to keep it.