Okay, voice of reason, downer voice, whatever--will you want to wear it often, or do you have events year after year where this would be killer?
For me, I'd end up covering it up too much for warmth when weather is cool, and then it'd be too hot when weather is warm, but that might not be an issue for you.
You could always try it, and see if it lives up to expectations--then if it does, uh-oh, you have a dilemma!
I think this is one of those things where it's not the cost per se, or that is, not the cost of the one item. It is, where does this fit in your wardrobe plan and budget? You don't have to wear it every weekend or even every month, if it fits into the grand scheme in a way you can live with.
I think it also illustrates the rationale behind not continually buying random things that are just okay and that we don't need, or even too many great items so that they take up space not being worn very often ("splitting wears" amongst large numbers of items), so that if one is running a lean wardrobe and careful budget, there will be room for a few "wildcard" or just "wild" purchases (always assuming that there is a budget limit somewhere). Then one can evaluate, was that worth it, or do I prefer for my big expenses to be big-wear items (daily handbag or oft-worn boots; winter coat).
