Windows Phone Thoughts: Free, All Ports GPRS Access Through T-Mobile?

I'm not sure if this is a mistake or a policy shift, but it appears that T-Mobile has removed all port restrictions from their free GPRS access. Review Team member Ryan Joseph broke the news in this thread, which I was able to confirm almost immediately. Prior to this, Pocket MSN Messenger would not work, nor would any secure site. Now I can use MSN Messenger without a hiccup, and Ryan was able to make a Handango purchase over the air. This seems a bit odd, especially since T-Mobile sells what appears to be the exact same access for $20/month. I'm happy, since the free GPRS was the primary reason why I chose T-Mobile - this is making a good deal even better. What are your thoughts?