No expert here, but might be of some help.
Traditionals are usually made to be cutting instruments or tools of some sort. Some are specialized such as cotton samplers, doctor's knives, etc., and some are more of the utility variety. Kind of a "jack of all trades" idea when designed. But in the end, the main duty of these knives whether a peanut or a folding hunter is to cut.
I have a small stockman and a small half whittler that you can bend the blades easily if you aren't careful. These are considered "gentleman's knives" and therefore aren't made for heavy tasks. However, they slice quite nicely, and I expect them to be around as long as I am if I take care of them.
My large CASE copperlock and my large CASE Texas jack are another story. Both quite traditional in design, but made for heavy duty work. These knives will take a licking and come back for plenty more. I carried that copperlock for years as my main work knife in construction and while the snap is a bit weak, it has decades left in it.
Make sure you are matching the task to the knife. I agree with Black Mamba: "If you're used to tacticools, which are significantly over-built, then they will seem too thin to you. Just keep the lateral stresses off the blades and you will learn to love the way they slice!" :thumbup:
On the other hand, this is why I usually carry two knives. One heavy folder for work, and another small knife for more polite tasks like cutting the end off my cigars. I am not careful with my RAT1 and could replace it easily, but would be undone if something happened to a favorite slipjoint.
Robert