This is the exact opposite of my and a lot of other people's experience. So much so that you had to have just remembered it backwards, because it is literally the exact opposite.
One third of Le Pro tips are dried out and rock hard, so dry and hard that when you try to scuff them all you end up getting is lots of microscopic dust but you can never get a rougher tip surface that holds chalk well. The next one third, when you try to scuff them, they just shred badly like the leather has rotted and is falling apart. The last one third are great tips that shape well, scuff well, play well, and hold up well. I have never understood how they can be so wildly different.
Triangles are very consistent. They are all good, and are all the same. They are very similar to the one third of the Le Pro tips that are good ones and shape well, scuff well, play well, and hold up well. Their sides don't burnish that well though so it is hard to get them looking as polished/dark as many other tips can get.
Even though they are rated as being very hard, Triangle tips and the good Le Pros do not play like that at all. For whatever reason they play like medium tips in my opinion.