ADA4895-2 disable

I wanted to know if the disable feature of the ADA4895-2 could be used as a mux function, for when the part is under power and when it is not powered.  Can you indicate the output impedance and leakage current when the outputs are disabled?

Also, is there any danger to the part if it is unpowered and there is a signal at the output?

Thanks in advance.

Peter Clerico