If set to engage enemies at will, The Gunslinger will initiate combat when he sees enemies in his sights, even in stealth mode.
If set to avoid engaging enemies, he will not aid the player in combat while he is in stealth mode, unless he is attacked by enemies first.
I would suggest adding a new tactic option in which he will fight by the player's side when the player is in combat, but not initiate combat at will. This will allow stealthy characters to choose which fights to engage and which to avoid.
