Violet Tiger with four falls

This is the second time this iris has had four perfect falls from different talks. I was wondering how common this is, and does anyone know the official term for this? Violet Tiger by Kasperek. There's a normal one beside the "four leaf clover" one.

Thanks,

Sandy

I recently attended an iris seminar. The speaker mentioned that there are some iris that the lead bloom will have 4 falls but the remaining blooms will only have 3. There is one iris that he noted has 4 perfect falls consistently on all the blooms. I don't remember what it was but there may be others. I'm not sure "how common" this is but it does happen with certain hybrids.

Thanks!