Ha ha ha!!LOL! the mammoth car?
never heard that one before. Comparing a BMW E30 with an armadillo, that is. IMO, the purpose of the eyebrow in any car, (but I care only about our E30´s anyway), is to give the car a more agressive or mean stance. Like you, I don´t dislike either the unibrow or the two-piece. But the two-piece eyebrow is only "mildly" mean, when compared with the badboy unibrow. So, if it was my car, (and I will do it), I´d go with the badboy. But that´s just me. I mean, if you want to be mean, you´ll want to be as mean as you can...right?
keep us posted! (pics please whenever you have it installed) Good luck