I've got this rack as well. Had it for about a year now. I've transported my bikes ~1300 miles or so with it at this point and really love it.

It does have some of the same drawbacks as any trunk rack: You need a top tube adapter to use it with bikes that lack a normal top tube, it it hard to secure it to the car so that it can't be removed by a thief, and it is hard to lock bikes to it.

The design is excellent however and keeps the bikes separate from each other nicely, unlike other trunk racks I've used. It's rock solid with the bikes on it, though I think I've only carried 2 at a time on it so far. With a top tube adapter I've even carried bikes that weigh 50lbs or so plus my bike (~30-35lbs) and it handled it fine. It also works fine with the spoiler on my 2002 Altima (after getting the adjustment right) and I've used it on a hatchback (Scion xA) as well.

The only drawbacks unique to the Bones that I've found are that the excess from the straps needs to be secured to avoid them getting beat up at high speeds and since there is nothing provided to do this it means you have to find something to do it with yourself and that it is a bit on the bulky side to store in your trunk when not in use without folding it up, in which case you have to set it back up for your car every time.