Major 7'13 "Jazz"
Major 8'13 "Rock"
Major 9'13 "Classical"
I've been out of the game for years, but the last IEM's that did this sort of thing was Radiopaq. They retailed at £59 (UK) now you can literally pick up the Radiopaq tuned for the price of a Big Mac Meal. I thought the different tuning was an interesting idea. I guess the market didn't agree!
Regardless of market agreement due to different tuning, I think it's more important for the market to agree with the way they sound.
I've not heard those before; I can't speak for them. But there's many reasons why it could have failed, regardless of having different tuning versions or not.
The C&M could suffer similar fate, but rather than different tuning it would be due to the lack of name recognition for most people! (which is why their nice design does help in catching attention)
Had they just called their models M7, M8, and M9, half of the "different turning IEMs just doesn't work" talk wouldn't have happened now would it
This problem is only in the head!