samba - Nov 2010 - Filesystem ACLs versus permissions in smb.conf

Hi all

I have been wondering for a while now what people think about using EAs  
and ACLs to administer permissions on a file system level rather than 
using smb.conf. I much prefer Filesystem ACLs, yet they appear to be the 
exception. Why?

Inquiring geek wants to know :)

Thanks

Bernhard