[Shadowen]

Is anyone familiar with Tom Arden's work? I've read the first 2 (Harlequin's Dance and The King and Queen of Swords) and although the first was interesting, no 2 was pretty slow. The next 2 books are called 'Sultan of the Moon and Stars' and 'Sisterhood of the Blue Storm' and I'm just wondering if it's worth my while trying to get them.

Any ideas?