My idea was based on those two fingers having the 'strength' to play a simple melody on one string while the other strings were just drones. If not... then yes, some dulcimers have slots cut so that it can be strung either way.
I still feel an autoharp has more ways to strum.... it was originally a parlor instrument set on a table and strummed very simply with chord changes. Thus, accompanying voice is not very demanding. Only you can know what works best.