The trunk does add some functionality that standard seat wouldn't, not to mention a distinct change of appearance.
Kind of ya either like it, or, you can live without it.
Seat costs can add up real quick. I'm a died-in-the-wool Russell Day Long supporter. The Corbin Dual Tour w/o heat and backrest will most likely be less expensive than having RDL do an F6B seat,,,
All butts are different, Some have Corbin butts, mine is RDL. If you know what works for ya, do it!
I guess I have a Corbin butt.
Mercury, you can bet California will get their tax out of you.
Please don't spook the road-sheep.