Right now, any dual wielding character will probably want one of these two talents, but has no need to take both. They both only affect the -20 penalty to the off-hand attack (as there is no pealty to the main hand).
As such, is there any reason for this to be two separate talents? The only purpose it seems to serve is to punsih characters who are considering swapping between dual wielding 2 melee weapons and 2 ranged weapons at different points in time. Otherwise, a character can just as easily select a single weapon type they prefer to use and know they will always wield, and dual wield accordingly.