I'm in the "keep the 26" camp. I have both and primarily carry the 26 with a 12 round mag and G19 mag backup in a Crossbreed holster. My experience is any holster for the 19 will fit the 26, but not vice-versa if the holster is closed at bottom.
"Courage is being scared to death and saddling up anyway."
-- John Wayne
"The wolf cares not, how many the sheep be." Plato