Their heat treat is excellent. I haven't done much with the Phrike (it is back up to my pistol) but I've owned 6 other Spartans with their s35vn (still own 5 total including the Phrike). I've done a couple of significant reprofiles and found the steel easy enough to work with on a Norton stone. My Enyo and Pallas have seen signifigant EDC work and the Difensa has been out in the woods a bit. Mind you, these aren't knives designed for EDC or woods work particularly. They are combat utility in design. I trust them for that.
Don't have the Horkos anymore, wish I didn't sell it.
Reprofile jobs: