I forget which is which too, but the fires skag is the most agressive, he will run up and attack you close.
The quest is one of the tougher ones in the beginning of the game, and enemies that are higher level than you take less damage from you and deal more to you.
According to Moe's employees on , missing a greeting or two every once and a while is fine, but you might get a talking-to from the boss if it becomes a habit.
The shock skag prefers range so if you run up to him, he runs back.
Moe's also sells complete meals you can defrost and eat, including chicken empanadas, chimichangas, and mini tacos.
In 2018, Moe's added the infamous Carolina Reaper Salsa back to the spread.