In thinking about this some more and I missed some of the original discussions on this. What were the most common deployment scenarios where you would use this?

Single homed boxes or multi homed.

I'm trying to put it together in my head how it would be done for dual EBGP sessions.

ie:

ISPA ISPB | | RouterA --- IBGP --- RouterB

Say I get a /16 and a /24 for a prefix from ISPA with the same next hop so I wouldn't want to install the /24. But what happens if I get a /16 from ISPB and that gets sent to RouterA. That prefix would have a next hop of Router B or ISPB so it would be a different prefix and installed in the RIB. Now the traffic that was originally flowing to the /24 would take the backup path (due to a longest match lookup) rather than the path it would have taken if we had installed the original /24. Would that be acceptable?

And we would have to think about if it would cause any problems for prefixes you already have in the RIB from your IGP.

Rodney