I think the original question may be due to a bit of confusion. I don’t think anyone has anything against the piper’s grip. But, in response to questions about specific whistles, say, the Water Weasel low-G, people might say that the holes (or stretch) are so big that PG must be used. It’s a way of saying that people with small hands might have problems with the whistle.
I’m with others, I use PG on many whistles. I find it very comfortable, and find myself using it instinctively on any wide-bore whistle, up to the Thin Weasel C. My fingers are too broad to use it on a D. I find that most maneuvers are easier/faster on lower whistles, but half-holing and slides are more difficult.
Is there a problem using the pipers grip?
I got a low some months ago and trying to use other grips is very difficult.
People shouldn’t fear the piping grip because after a few hours it goes on for itself.
I’ll repeat what’s been covered already. PG is mainly a matter of necessity depending on tonehole spread/hand size factors. As a flute player with small hands, my right hand just automatically gravitates to PG, but the left is fine with the “standard” grip. Without using PG on the right hand, I would be unable to adequately cover the toneholes. Once after playing at a fundraising salon, I was approached afterward by a Boehm flautist and we compared notes on fingering and hand position. Noting my “odd” right hand’s grip, I demonstrated why it worked in my case, and that it actually facilitated (in my case, mind you) dexterity. The Boehm flautist mentioned that in her discipline such a grip was not unknown, but in classical circles tended to be looked down upon for some reason. No doubt a non-PG is more feasible with keys. Possibly the ergonomics of PG tend to let the foot end drop more readily; there seems to be an easier time of it keeping up the foot end if I try the other grip, but the tendons in my right hand start going crazy. So, back to PG, and just mind the angle a bit. No big deal. Ya gotta do what ya gotta do.