Nick, these are actually my weapon of choice on my ramp riders - I've had about half a dozen sets and love them. They don't come loose like twin-pinch and from a first glance are easily accepted as 80's cranks.
If you're putting them on a pony, then you're straying into midschool though...... so you'd have to sell them or offer them as part-exchange for an older set maybe
What finish, condition and length are they?