I can't really say, I did buy a few times from a person from Hong Kong and every item I've bought was an authentic one, but I'm still trying to avoid sellers from Asian countries.
The items look good, so the feedback, I think she/he is a re-seller. The Blue Bolide she or he(whoever that it) is selling is a Web II and not a Bolide.
I think he's authentic, and he may be listed on www.mypoupette.com as an authorized seller. That said, I would NEVER buy from anyone outside of the US., Canada or the U.K. You will not qualify for Paypal Buyer Protection. Call Paypal directly for more information.
He's authentic but tends to have high prices. There are a few resellers based in Hong Kong for some reason and there are a lot of genuine designer bag owners in Hong Kong.