Can you do s30/s45 for the custom? Personally in my pocket knife usage it's much preferred. Chris Reeve helped to develop s35vn due to wanting to make his folders easier to machine and a bit tougher, but you are reading a decent amount of edge retention for a bit of tougheness. The newer s45 does a better balance too, bit more edge retention than s35 but a bit tougher than s30vn, and more corrosion resistance. I've used them all quite a bit and really like s30/s45
That being said well heat treated s35 is still decent, CRK liked to run it quite soft. Definitely very different compared to aebl or apex