been playing bladesworn in pvp and the gunblade itself feels problematic as it a) locks you out of one of your weapon sets (thus reducing your flexibility) and b) acts as your second weapon set including the timer to swap back.
Part of what makes warrior fun to play is the ability to drop burst on a dime with the adrenaline skills, having the gunblade fill that role but take extra steps to get there feels like it opposes the idea of being a mobile, versatile, surgical striker.