Yes, and no. I am currently running the froyo version of CM7, and theres not any major bugs that I have come across. The GB version is still a BETA version, so it's not ready to be a "Daily Driver". The Froyo version is my daily rom, and I love it. Now, keep in mind, you will have to be on froyo to flash this rom over. I like it because I have not come across a version of GB, modded or not, that I liked, so Froyo has been working fantastic for me. If you are comfortable with RSD Lite, the a simple SBF back to Froyo will allow your phone to run the CM7 version meant for Froyo. The link for the Froyo version can be found here, at post #5.
http://www.droidforums.net/forum/cyanogenmod-d2g/170532-cm7-help.html
Let me know if you have anymore questions.