hiya, your son is not alone!!
i'm left handed, i used 2 have probs with 'normal' scissors - now im all grown up i don't have any trouble
i think that 'lefty' scissors have the blades shaped in a different way or sumfink. its supposed 2 be easier, i tried cuttin with a pair not long ago - it was bl**dy awful- maybe cos they were kiddie scissors!
u're lil un shud b proud 2 b a lefty - i am!!
:goodvibes