This post is just what I've experienced importing a 2008 Ducati monster s2r 1000. It was a pita to find any information specifically regarding bringing a ducati into the country so if this helps anyone else out when they search the forums it'll be worth it.
First item: "The bike has to be out of warranty to get the recall clearance letter". I lucked out an imported mine a week after it expired so I didn't really have to deal with this but Ducati North America said they will not issue a recall clearance letter. This doesn't make sense since the claim their warranty is valid in Canada and the US. Item #2 'should' negate this but then I don't think you could get warranty service up here without getting the cold shoulder.
Item #2: $500 recall clearance letter. This is not needed. I nicely asked the girl at the counter at Richmond motorsports to print out a copy of the warranty status of my bike. I handed it over at the RIV offices in person and they turned it down but then I faxed it in with a note saying it was a printout from Ducatis dealer service web site and highlighted the url on the bottom left hand corner (www.ducati.com etc). This went through fine and I avoided the useless $500 fee. From what I've gathered from other forums this works for BMW's as well. Only problem is the guys at John Valk BMW are apparently "knobs" and will treat you like you have scabies if you bring in a US bike so it would probably be best to get the printout from a US dealer.
Inspection at Cambodian tire was quick and painless and I was out in 30 minutes. They didn't even bother to put the km/hr stickers on (I'm getting a gauge faceplate to "convert" my bike over.
Hope this helps out.