Our finicky cat seems to be quite taken with this addition in front of his favorite window in the dining room.  As an added bonus, he's not jumping up on the dining table to look out the window anymore.  This product  has already paid for itself by eliminating this aggravating habit of my cat.  

Pros: No assembly, blends into decor, doesn't show cat hair, cat loves the sissal wrapped post.
Cons: Not really a con, but if I were designing this product, I'd make the post adjustable so that the perch could be adjusted to any window height in my home.  Still, it works well just as it is.