What is a very slicey AND robust knife

[whp]

For a folder, look no further than Spyderco's Gayle Bradley 1 and 2. Thick, ergonomic handle, hollow ground CPM-M4 blade. Mine has been serving me well since 2013.

Agree with this.
Also the Manix 2 is very slicy and very sturdy.

 

[F1fan]

You are going to want to look into customs by makers who really target edge stability.