CPP13 — DSI and implicit activation

The C++ "Mapping of PortableServer Dynamic Implementation Routine" states
that "If DynamicImplementation::_this() is invoked outside of the context
of a request invocation on a target object being served by the DSI servant,
it raises the PortableServer::WrongPolicy exception".

This conflicts with the behaviour of _this() in static skeletons as de-
fined in "Skeleton Operations".

In particular, this means that DSI servants cannot be implicitly acti-
vated, and therefore, the choice of DSI vs. static skeleton is not trans-
parent to the application integrator.

Is there any rationale behind this?