g26 grip does not offer a shorter reach to the trigger only hieght and also has a more pronounced hunp then the 19 as it over a shorter span. Not nearly as friendly.
Ah, but if the hump agrees with you it's even more "friendly." I know that's the case for me- it fits my hand as if it were made for it. Gen3 that is, I'm not crazy about the changes with the Gen4.