On the one hand, the only comment currently in this thread from a person who has tried them talks about a W profile. On the other hand, the graph clearly reflects that.
As I mentioned before, for me the graphs are the only credible and valid point of reference. But just that, a reference. Of course, for me the only valid one. Simply because any opinion or review is totally personal, based on the personal tastes of the reviewer, and I am clear that my tastes are different from those of most reviewers that I have had the opportunity to read. For example, the reviews of the IE300 on headfi all list it as wonderful, and after buying it and testing it for a week, I found it totally bloated on the bass, and loaded with shrieking, sibilant treble spikes. In short, quite unbearable.
Apart from all this, of course that I like some IEMs that say they have a V profile, and I do not like others. And I also like some IEMs that say they have a W profile, and I don't like others. The same for profiles in U, in L... It was simply a way of expressing it (using "letters"), which are used a lot in this world, nothing else.