I haven't carried a Yo 2 in over a year but if this one is M4 I may need one. I've really got my eye on a Caribbean right now so we'll see.
From my experience, a properly maintained non stainless, DLC coated blade is essentially the same thing as a stainless. My hands down favorite steel is actually DLC coated M4... if this knife appeals to you. Give it a try, you won't be disappointed in the steel.
Me & you both. Think I'll get the serrated leaf.