A member on the xda forum figured out how to get the Android market to work. The procedure is complicated, but it's now been confirmed by multiple people. I posted the steps in the development section of the Edge forum. At the moment, the procedure requires using another rooted Android phone. I'm considering creating another Google account and uploading my Titanium Backup files to simplify the process.
I don't really find it significantly different than the Amazon Market (in fact, I would say Amazon has a better interface). That said, Google still has more apps. I missed Best Deals and Beautiful Widgets.

Of course, you could probably get these apps from other places, but it's a little more of a pain in my buttocks.
I want to fool around with the sdcard settings, but now I'm worried that I won't be able to go back to Ermine. Anybody know if you can still download the beta update?