wrote in message
...

Ah, but the main advantage (AIUI) is that the IFR clearance "VFR on top"
gives
you the flexibility of chosing your own routing while still staying in the
system. In
congested airspace, it's often unlikely they'll give you a routing at IFR
altitudes
due to conflicting traffic. With VFR on top they're more likely to let
you through
without a big diversion.


Clearance to maintain VFR-on-Top does not alter the assigned route. Given
that separation is no longer an issue it may be easier to obtain desired
routing, but it's still an IFR operation. If you're going to a destination
where IFR arrivals require some specified route you're still going to need
that route.