Nope, I've never had opportunity to ride one. I am of the understanding, it is constructed with the same geometry as all other Colnago models. One would expect, then, the ride to be identical to the other models.
How do you find the ride of the Colnago Arabesque ? Yes, subjective;yet, your experience would be informative.
I've been benignly on the look-out for a smaller - 50-52 - Arabesque. Ah, perhaps this is the year.