No, this is not possible. If you need a config export right away, you can set up a remote location to the APIC itself in /data/techsupport or your user home directory, then manually copy the file off using SCP or an SFTP client.

There are some feature limitations with first generation (9396) spines in terms of remote leaf, multisite, etc, however you can use different generation spines in a single pod without a problem.