I am using Private Reserve in my Lamy right now. The Claret is fabulous. I have never had any issues either. The point of my original post was about using Noodler’s in vintage, or expensive classics like a Mont Blanc Meisterstuck.
I do not usually buy new pens. Rather, I get old models online and restore them with proper modern materials. I have found that old fountain pens can be both better; and cheaper than many expensive, modern pens. After reading Richard’s comments, I hesitate to use these inks in my older pens. That is not based on my experience, it is based on Richard’s experience with literally hundreds of old pens.