If there's one thing they know about in the Star Wars setting, it's how to battle-harden electronics. Imagine zapping any appliance or gadget you own with the amount of power surging through one of those electro-staves. Yeah, it wouldn't be pretty.
Transcript
Obi-Wan: I Force Dodge, then disarm Grievous with the staff. 15.
[SFX]: kzrzk
[SFX]: kzrzk
[SFX]: whack!
GM: You knock his blaster away... without cutting a hand off!
R2-D2: You're losing your touch.
Obi-Wan: I try to knock him down. 19!
[SFX]: whack!
General Grievous: Hiding behind your mother's proboscis, little fly?
General Grievous: My invitation stands. Together we can scour the Galaxy of all that offends us. Your brain in my finest chassis!
Obi-Wan: Never!
[SFX]: Kzrzzrzzzkkk!!!
General Grievous: Good man! You may retain your lungs and tongue. Never give up the finer things in life.
[SFX]: kick!
[SFX]: kzrzk
Obi-Wan: What?
[SFX]: slam!
General Grievous: A rare cigar and a snifter of cognac after a hard day conquering worlds. What say you?
Obi-Wan: You're nuts!
General Grievous: Aha! If I am nuts, then who was the nutcracker?