Google IM for iPhone

I've been using Meebo on my iPhone for a about six months now, and I like it. I can Instant Message using my Yahoo, MSN or AOL accounts.

Now, Google is jumping into the mix with their Instant Messaging client for the iPhone here. It looks pretty slick, but, there's one drawback - you can only send and receive messages with other Google Talk contacts. I suspect this app will facilitate VOIP down the road, but will probably be limited to Android phones.