We just purchased a 02 Midnight RSV and it has been lowered at the rear, before that I was riding a 86 Venture so just going from first gen to second gen was different then you add in the lowered aspect it just added to it.
After about 3 plus weeks all is good now, the only issue I have is that when riding 2 up, the tips of my exhaust have scrapped the ground when leaving a couple of parking lots. As for scrapping in turns, I have not experienced this yet. I think the bike handles ok and love the ride it gives. My only concern would be if I was to install a hitch and pull a trailer, I would probably raise it back to the stock height at the back end.
Enjoy the new ride.
Mike.