If you hit any slip-joint with a stick, you are asking for it to break. They are made for cutting and are less suited to abuse than the tactical knives are (most people discourage batoning with tactical folders as well). Think about their construction, tactical/heavy duty knives have bolts for pivots and even they can be damaged from batoning, a traditional slippie will have a lil' old pin as the pivot. Imagine this, when the blade is open you will have a leverage advantage over the pin, add how small the surface area is and also how hard you will be smashing it with a stick = sheared pin or loose blade. Save the light batoning for a fixed blade, you could lose a finger and many knives trying it with a folder.
Scraping with a knife blade can be done, but could damage the edge and just doesn't sound like a task I would want to use any of my pocket knives for. A SAK (swiss army knife) sounds like it would be a good choice if you plan to do more than cut with it.
If you want to stay traditional, I would forget about anything abusive or damaging and recommend a GEC (they are very strongly built), Queen, tougher Case like a trapper, larger stockman, moose, or a sodbuster.
I like to whittle as well and I have a preference over smaller knives when I carve. I find jacks, pen knives, barlows, whittlers, congress, and stockman all easy to whittle with as long as they are about 3in. to 3 5/8in. closed, no bigger and no smaller save for a few special knives. Case and Boker make my favorite whittlers, they have the thinnest blade and good edges, Queen and GEC are a little over the top for me as I don't need knives like tanks, I would rather have one that cuts well.
These are some of my favorites for EDC and whittlin.
Case Small Texas Jack
Boker Barlow
Case Pen
note: these were random images off google.