some kids round here had them, i saw them at night out with a mate and thought WTF!!!! we went over to them to have a go and they ran away and hid, we found them and said we just wanted a go, they let us. it was funny as hell. they make all the wooooosh noises and fizzle when you put 2 sabres together :-
bit pricey at 99 quid though eh B)