Maybe the OP has already decided she is not going to come to HK with her hubby and has thrown out the ultimatum - either you stay here or I am going to divorce you!
As with most things, "yes there are two paths you can go by, but in the long run..." I could see that a move to HK (or anywhere for that matter away from a home base) could strengthen an already well grounded, stable relationship. However, on the flip side, if the boats a rockin' before they get here the chances of capsizing surely increase! I myself am here (on this forum I mean) because I am now with an HK local who is looking to get back to her family for a while as shes been abroad for quite some time (down in Sydney and now up here in NE China). I know its going to be tough for me, but not for reasons aforementioned in this thread.