There is another reason besides durability to consider when looking at Ca vs Friction Polish, and that is the distortion to the wood color. Look at your friction polish, look at the contents, if it is displayed, and realize that almost all of them have either shellac, varnish, linseed oil or combinations of these in them. Look at the color of the Polish. Then do this, turn a beautiful clear piece of Holly, and finish with CA, then turn another beautiful clear piece of Holly with Friction Polish. Which one is whiter/clearer? Some people add several coats of FP thinking this will make it last longer, but they are changing the hue of the wood by adding an amber tint to it.
Also turn a piece of Aromatic cedar, apply FP, then turn a second piece of Aromatic cedar and apply the 3 or 4 coat
CA finish to it. Let them both lay on a shelf for a couple of days, then take your thumbnail and press into each of them The FP will dent, but usually the CA won't. I use all four basic finishes CA, FP, dissolved Plexiglass, and Sprayed lacquer, depending on what I am finishing, the results I want, and what the customer wants.
Rob