Reasonable enough to keep 2 dwarf gouramis in a 10 gal filtered tank? And if so, is this tank at capacity? Cause I already have a bottom feeder (gold spot dwarf pleco, about 2 inches) that stays mostly on the bottom.
3 would be ok size wise, but I'm not sure about adding them to a tank with a pleco, you already know what I think about that... If you move the pleco then sure they will be fine.
If you go with honey gourami instead of a dwarf gourami you could get 3 because they are less agressive . I also think (at least around here) it's easier to find female honey gouramis.
If you can find female dwarf gourami in your area I would get 1 male and 1 or 2 females.