If you don't change anything from the wizard created services then yes - it will authenticate. Reason being UPDATE ENDPOINT KNOWN and GUEST MAC CACHING policies.
That said - you can have the SSID's on two different systems and it will still accept the mac-caching. Basically the service checks your role, that the mac-address is in the Endpoint database, that it's known, that it has a username attribute, and that this user is still valid.
To work around this I guess using the Role could be a way to go. Different guest roles depending on the SSID.
Another way might be adding the CONNECTION:SSID as an attribute to the UPDATE ENDPOINT KNOWN policy and test on this during mac caching.