Reasonable question Primož Marinšek.
See / compare: https://forums.ruckuswireless.com/ruc...
I would like to maximize the use of all our APs (zd3000/zf7982).
For the most part, our Androids and Win 7 clients work with Ruckus' default AP/WLAN settings. I wanted to create a custom WLAN for the iOS devices but I did not want to remove one or more of our APs from the larger default pool of APs that all my clients access. I would then instruct the iOS clients to use one specific SSID as we test and tweak the channelization and channels, etc, etc for those iOS clients. My theory, this would be less disruptive to the majority clients and also them the broadest radio support they deserve. The iOS SSID would be the restrictive narrow range radio version.
BTW: Ruckus claim for out-of-the box easy setup is only true if you do not use Apple products and there may be other exceptions.