Alex,
No idea! I have a lump of it that is very dry but I havent got round to turning it. It is used as a turning material, I think that the scarcity of it as a dried material has meant that it is not featured prominently in any forum or magazine. I think you'll get a high wastage on it, as a shrub it is likely to move in life, split in death! If you've got room to dry the larger pieces, go for it. PM me your ad and I'll cut a blank of the stuff I've got and you can make a decision, lathe or firewood!