BBM in Hong Kong
 

is there any way to use BBM in Hong Kong as part of a Pay-As-You-Go plan?

No there isn't a pay-as-you-go plan for bbm in HK.
there is only monthly plans. the only company that offers a no contract on blackberry plans is Smartone. $398HKD for unlimited data usage + about $100HKD ish for voice plans + what whatever options u need will run about $498 a month but month to month base u may cut it anytime u want. hopes this help.
if not just turn off 3G and leave your current sim card in atm and just WIFI BBM, as there are many WIFI hot spots thruout HK.

Month to month berry data requires HKID and mailing address
Posted via RS Mobile

i am having the same issue.
there aren't a lot of wifi hot spots in hk. second, i want to keep my bb on all the time when I do have wifi, but i dont' want to carry two phones when i am in HK using another phone with a hk sim card.

there's no other way around it... I had the same problem in HK, I carried around two phone's in HK for the first week but than I decided to just get the plan, as I was there for 8 months.