As I use sword holo, rifle holo(only for 99), condi holo( for 100) in fractal, sword holo is pretty simpler than rifle holo and does better dps. I recommend you to go sword/ shield, not sword / pistol since dps loss is small and shield skills are great for additional CC and defensive options. Other Engi utilities are very useful in frac ( group stealth, super speed, pull mobs, etc etc)