We've had a self-grooming brush arch like this one for about four years, and it's holding up very well although our cats don't really use it as intended.
Our arch brush sits in our living room. Rather than using it for self-brushing, our boys Gumby and especially Timmy like to lay under it or next to it. Timmy will sometimes use it to brush the inside of his mouth (in other words, he bites or munches on it). Despite this misuse, the brush hasn't shed any bristles and still looks pretty much brand new.
This small piece of cat furniture doesn't take up a lot of space and it seems to bring comfort to our kitties, so I'd say that's a win. Lots of consumers do report their cats like using it for self-grooming.
Our self-grooming arch was easy to assemble, with the brush ends fitting easily into the base. This product for cats is advertised as a three-in-one item: the brush is a groomer, the carpet base is a scratcher, and when you add catnip, it's a toy. We'd have to say the three functions it serves here are: ineffective hiding spot, comfort napping zone, and mouth scratcher.