Nice to "see" you too!
Yes, Dual Mono will get the .1 LFE channel in addition to the Bass Management for the Small channels when the Center Sub Output is not setup as LFE.
The hierarchy is as follows for our Emotiva processors (just as a recap):
Left Sub Mono: gets BM and LFE.
Left/Right Sub Dual Mono: both get BM and LFE.
Left/Right Sub, & Center Sub Mono: all three get BM and LFE.
Center Sub LFE, and any combination of other sub outputs in some flavor of Mono: Center Sub gets only LFE, anything setup for Mono gets BM.
Center Sub LFE, and no other subwoofers, Fronts Large: Center Sub gets only LFE, and BM is sent to Fronts Large.
To date, I still use Left Sub Mono and Center Sub LFE, and use miniDSP to route to a group of subs. BTW, I use the Emotiva VSUB transmitters and receivers to get across the room so I don't need long RCA cables.