Mirroring on SNAT and persistent iRule

Hello,

I'm trying to understand when mirroring is effective on LTM. I have a v11.4 LTM installed for Exchange services. The iApp for Exchange "microsoft_exchange_2010_2013" creates iRule with persistent actions in it. Are these persistences automatically mirrored? In a classic persistent profile (source_address or uie), you can enable mirror persistence, but when you call a persistence (that has no profile created) in an iRule, is it mirrored?

This is an extract of this iRule created by the iApp( combined_persist_irule7)

 if { [HTTP::header exists "APM_session"] } {
        persist uie [HTTP::header "APM_session"] 7200
    } else {
        persist source_addr                        
    }

Then I was watching for SNAT mirroring : it's possible to enable stateful failover mirror, but only on SNAT List not on SNAT Pool.

So what's the difference between SNAT List and SNAT Pool?