Each individual varies in their 'preferred' grips and knife shapes. If you have the opportunity, take Edged Weapons Overview with Southnarc
first and there you'll be exposed to dozens of different blade types, such that you can explore many options simultaneously and get a sense of what you like and don't like.
The Clinch Pick works very well for me in reverse grip, but I'm the opposite of Wondering Beard in that I must cant my wrist to make a good stab with it in forward grip. More important to me though, the Clinch Pick is a knife that is sized very well for concealment. We can all carry bigger knives, I'm sure, but the CP is a near perfect balance of size, capability, and shape to conceal well and still work well.
As far as handle material, it's largely a personal preference. Right now the China-Pick I'm wearing has the handle wrapped in cloth tape to fill it out into my hand a bit more. I find the the egg-shape to be a bit too round and worse too small in its rounded form. I end up with the knife twisting in my hands. Several rounds of cloth tape thickened it up enough to limit twisting. The current generation Ban Tang Clinch Picks are near perfect with their flattened scales. Zulu Bravo Kydex is offering a scale flattening service that brings the production (i.e., "China Pick") knives in line with the current Ban Tangs.
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As for the JB Piks, if you like 'em, get one. You can, literally, never have too many knives. For preventing oxidation use
Renaissance Wax (that small can will probably last you the rest of your life). Works great and is fine for incidental food contact. I Ren Wax all of my blades.