Is there any truth to the statement that a right hand shooter should shoot feathers fletched left helical and vise versa?  Or does it really matter?

There are some benifits such as clearence, but I think these can be overcome by nock rotation. Either way the benifits are small. I'm right handed and shoot right wing. Started that during a period many years ago when left wing feathers were scarce.
For the average archer it doesn't matter. Just my opinion.
Ron

Doesn't matter.

i am a righty and shoot rw helical just have always done it that way  i know of some guys that go by the right hand  lw helical or vice versa i think it is more a matteer of personal preference

Only problem i ever had was the right wings wore the shelfs of my bows and cut my bow hand . Others say it don't matter . You will find out after a little shooting .

right helical helps to keep your points tightened unlike left helical.

It's the biggest myth in archery as far as I'm concerned. I am a lefty and therefore started with right wing/right helical. My son is a righty and all his arrows end up with right wing/right helical as thats all Dad has around. His tips never come any looser than mine and his arrows all fly just fine.

Many many years ago some smart left handed guy started this one so he could clean up on all the right wings the righty's didn't want. It's kinda evened out over the years. No deals now.

As has been said above it does not make any difference.

If you are using a single bevel broadhead you probably would want to match the head and fletch.

If using a single bevel BH you DO want to match the bevel and fletch.  I think this was briefly covered in "the articles".lol

I only have a left Helical clamp and a straight clamp.  For LW feathers I use the helical and RW feathers I use the straight with offset.   Yet to see any difference, although my experience comes from the wheeled-contraptions.