Fyi I asked the Devs and Sam just got back to me (I'll have to share the exact reply later) that the Two-Gun Mojo with Auto-fire would be +3 Difficulty, not +2.
So even at short range Thats Difficulty 4 before adding in "Double or Nothing" Penalty...which would kick it up to 5 so mechanically not worth any other than suppressing fire...
...or scaring the pants off of some baddies...cause if you ever DO hit...peeps are going DOWN! In any case not worth the time to build...
So I'll probably stick to the Dragoons or maybe Disruptor Pistols...muahhahahahaha