Perfect (virtually no clipping): Bald, Corn Rows, Flat Top, Kung Vu, Male Pony Tail Attachment, Rosti, Two-Tone Johnny.
Fine (a very small amount of clipping): Bowser, Gianni, Shabba
Marginal (seems to look fine, with a fair amount of clipping, but in some cases it just appears that the hair is falling over it .. in other cases, it's passable. Use at your own risk): Aeris, After The Rain, Cheif, Cyberhawk, Edward, El Lobo Wilbo, Garnet, Hendrix, Monsieur, Pahted, Paine, Punkys, Reaver, Seph, Tread, Zexion
Almost (there is a lot of clipping and it's debatable whether it is acceptable or not depending on how desperate you are to wear a crown product - this is at your own risk): Fayt, Jagan, Kairi, Liberty Spikes, Mohawk, Namine, Reno, Rudy, Ryu, Sora, Valentine, Yuna
Definately Not Suitable: Kittenkat's "Any Length" Hair, Chi, Cloud, Coif, Fro Bros, Kenshi, Mod