I have now run HCL for the past few weeks and I have become more and more familiar with the quirks in the initiate functions. At this point I can say I get no replies or change in status from viewers that are using IE6.
IE7 is not as much of an issue as I had originally thought, I see many initiates update status in the monitor, or even turn into accepted chats. This is not the case with IE6.
As usual, FF 1.5x and 2.x, respond close to perfect.