Beaufort ink sell left handed nibs, which are ground differently to cater for the angle lefties hold the pen when writing.
In basic terms the issue that some left handers have is that, due to the angle of the pen to the paper, they tend to push the nib into the paper which creates resistance causing it to become scratchy, whereas right handlers drag the nib along the paper so there is little resistance and you get a smoother writing experience. Left handed nibs attempt to get around this by grinding an angle on the tip to offset the issue.
Having said all this my wife is a leftie and I’ve made her several fountain pens and she uses normal nibs quite happily. So it does come down to the individual. If you can I’d get them to try out a normal nib first and see how they get on.
Cheers
Ash
