Just received mine in the mail today, and programmed all the commands into my Harmony 880 with no problems. You still have to turn the PS3 on and off with a controller or manually, since the USB infrared receiver powers up with the system. But that's a small issue compared to the benefits of having everything on my Harmony where I can see all the buttons and am familiar with their locations.
Overall I'm extremely happy with this purchase.

A computer once beat me at chess, but it was no match for me at kick boxing.