Frrk what it looks like, if it benefits your car and you need it, get it.
you can paint it, hide it or get some cool braided lines/tubing to make it look better.
I used to have blowby wrecking my life, got it all cleaned out by a mech, he said i should get a catch can to fix my probl;em ( my car kept stalling).
I decided to do nothing, but coz i dnt take my car to the track or run boost, dnt think i really need one. car runs fine without one.
I'd say get one if it sees the track a lot