There is no secret, just bait your opponent, until they make mistakes.
Doesn't matter which device you use, works on all.
no-sword makes opponent and yourself not know where full reach is, only good when you want to rush, and possibly die like an idiot against a defensive player.
I recommend not using it.
Defensive: baddy_sword (any big sword)
Pushing: stab swords, or no-sword
Swords are just for effects though. They cause you to think that you are attacking really fast, and if you rush and move around a lot makes you look even quicker.
Big defensive swords make your opponent know to keep their distance, and let's you know what your reach is. Very good for counter attacking when they want to rush. Hit first, and just stay back if opponent delays/lags/wants to rush into your sword.