It's less and less needed as time marches on and more of the functionality is implemented within SiLabs SDK for the 700 series. But using the method above doesn't use the SDK or anything 700 series related. (Using a UZB700 with PC Controller uses the serial interface and thus is functionally identical to a UZB500.) One must believe that eventually SiLabs will get all caught up on the bugs and distribute a SDK we can live with. (Meaning the bugs that remain are too obscure to hit us daily or even monthly.)
While we wait for that golden day, using a UZB500 and PC Controller software on a PC can reduce frustration, somewhat. 
