It may just be me and my limited knife sharpening skills, but I find CPM3V to be pretty darn challenging to sharpen - certainly in the field where I prefer just to strop where possible. That may be the 'other side of the coin' re. edge retention, etc. I can usually get my 3V to shaving sharp eventually, but it takes a bunch of work at my end.
I now only have 3 fixed blade knives which are 3V and I have to turn to pretty low grit stones to resharpen them 400/600 to start out. I don't typically carry those out in the field although I recently bought some cheaper 'stones' out here to do just that.
Steel isn't a complete deal-breaker for me but that being said, I prefer stick with O-1, A2 or even 1095 for ease of sharpening.
Obviously, JMHO...
Ben