The Ivory comes with a wood core and titanium sheet and is specifically aimed at expert ladies.
Unfortunately our 'expert lady' thought they felt unstable and unpredictable, throwing her into the back seat.
They were not very grippy, had a catchy tail and she just didn't trust them at speed.
That said, she also wondered if the poor performance was due to a bad tech job, so you may want to try a well-prepared pair yourself before taking our word for it.