Nobody can really answer that question but you. If you are dead-set on using it and you require features from 2.0, give it a try, just keep backups before you upgrade and keep install media for 1.2.3 on hand.
2.0 is stable for some, and completely unreliable for others. It all depends on what features you use, hardware, etc.
If you do try it, be sure to report any issues you find, and always use the most current snapshot available before reporting an issue in case it has already been fixed.