Streamlined/ActiveScaffold don't support has_many :through?

Wes Gamble wrote:

All,

I hear tell that neither Streamlined nor ActiveScaffold support the use of has_many :through relationships in the sense that HM:T relationships will effectively be read-only in those frameworks.

Does anyone know why this is? I assume that it has something to do with the way that the relationships are introspected on?

ActiveScaffold supports R/W has_many :through. Dunno about Streamlined.