I have installed many and have had mixed results.
I will tell you that they do seperate a little easier than other layered tips, for whatever reason but they can be good if installed correctly.
The trick to Talisman (and other layered tips) is that you have to use a DAMN sharp blade when shaping and NOT cut against the grain of the leather. You cannot shape it with a scuffer or go at it in a hard manner with sandpaper to shape. I have found that if you use much friction or get the tip too hot during the install, it will weaken the bond of the laminates. They pull apart easy, so you have to shape them in a way that you won't "pull" on the leather very much. You want to shave it cleanly instead.
I had many of them come apart in the beginning, and was told by someone that if I got the tip shaper from porper, and make sure it is RAZOR sharp when doing any layered tip, I would not have the seperation problems. True it is. I spent the $120 to get the tool, and I don't have them fall apart anywhere near as much now. Not to mention, that tool is an awesome thing when doing tips of any kind. Perfect shape every time, and easy as pie.
You can
find the tool here.