1.7mm THICK, not wide. 2.5mm wide.
Edges are funny because people always list the width like it is
something revolutionary. 2.5mm thickness (which is what we use) isn't
that much wider than standard, which is 2.2mm. 1.7mm wide is, as you
said, thin as hell.
The reason 1.7mm wide stuff is used is to save on weight
But companies always list width, which is definitely important, but it isn't everything. Thickness is also super important, and somewhere we wanted to separate ourselves.
ON3P uses a 2.5mm wide x 1.7mm thick edge. It means we also need to
get base material that is thicker than standard (1.3mm). This might
not sound like that much of a difference, but it gives you 30% more
edge/base material to protect your skis from core shots and from damage
from rails/boxes/etc over the standard stuff most companies are using.
I've spent a lot of time talking with Crown, Isosport, CDW, and MD and
these are literally the thickest edges I can get without going
completely custom, which I can tell you would require a HUGE order of edge material, something that is just out of the question for us..
A lot of companies don't like going up to 1.7mm thick stuff from 1.3mm
because it does add weight. I value durability over weight, so it is
what we use.
Here is a photo of some ON3P edges compared to the edges from another freeride ski. Their edges aren't thin at all, so no reason to crap on their edge width and thickness, but I think you can tell that the edge ON3P isn't a little bitch edge either...
ON3P on top in both photos....
If you do wanna see some funny stuff, I can get some photos sometime of our 2.5mm x 1.7mm edges against some 1.7mm wide edges.