Depends on how you use it, really. I’ve seen some pretty awful uses, and some pretty great ones. I’ve used it as a head, as shoulders, and as waist armour. If you mean specifically as a head, it’s probably alright unless you do something spectacularly terrible with it.
A bit of personal advice learned in my younger MOCing days - don’t use Bohrok eyes with it; (at least, not as actual eyes) it gives the head a really awkwardly top-heavy look that just doesn’t work all that well. It would also be a good idea to give it a Roodaka-styled lower jaw.