I recently bought a few of their Blue impact tips to see how they play. Put on a medium on a 314 shaft and I must say that I am positively surprised on how nice it is.
Hit is difficult to compare to other tips as it is a bit different from most. Zan M may be the closest feelwise to the medium hardness blue impact.
Holds chalk fairly well, doesnt seem to mushroom much after one trim. Glazes over time like all laminated tips tend to. I really like sound of hit on the blue impact. They are easy to install on a lathe, cuts well and dont need too much burnishing to look nice.
I cant speak for how long it lasts as I have had mine on for a few weeks now but for now I like pretty well.
Good tips in my book