Personally I don't see buying LV in HK is worth it...if you're planning on buying loads there, that is. When you take it all back to the US/Canada, you'll have to declare it on the customs form, and lying isn't an option since they actually check now! So you may end up having to pay tax/duties in the end when you return to the US/Canada anyways.
I'm confused....whats the thing about paying customs? isn't buying LV in HK...technically buying retail even though they don't have tax, hence you don't have to pay for customs when you go home?:s