No, as far as I know there's not really a way to schedule it, other than writing your own script to run CLI commands at a certain time etc.
SNMP would be an option, there are SNMP products out there that could collect this info on a schedule and deliver reports by email.
This is an interesting feature request though, and if enough people request it maybe Ruckus product mgmt could look into adding it for a future release. I'm sure it wouldn't be hard to add a UI button to export client info to CVS file. (Schedule+email report probably outside the scope though...).