Anyone got any Scleranthus biflorus?

I bought a couple of these at a nursery a couple of weeks ago. Lovely looking rockery plant.

Anyone got any & have any tips on keeping it. Here's a pic i found on the web:

 

All I can find is that it likes a well drained soil, and keeo it flattened to avoid brown patches!
It sounds a great plant, seems to be from NZ. How big are your plants and are they really moss like?
Looks lovely
http://www.trevenacross.co.uk/shop/page8p.htm
Sounds as if it should be better known?