I know a guy that owned a 620 for years. If I put an Ohlins sock in front of him, he would not know the difference. For someone that is not up to date with the features of the Ducati specific product line this might easily pass as the stock forks.
a 620 isnt a $10,000 limited edition bike though. Its like a kid buying a dodge neon and neon STR-4 as much as he doesnt know about cars, he would start questioning what hes paying for when it gets to that price point.