Also, from SanDisk's release:
Cruzer Enterprise in Mac OS X and Windows PC environments has the same features and data security -- even if used in both environments. The device can be initialized from either a Macintosh or Windows computer, where users can:
* Log in and shut down access to the encrypted storage area * Change and manage passwords * Change contact information, language and other preferences * Launch online support, view current firmware and drive information
That makes it easier for security admins to manage the security of their flash drives, even in mixed OS environments.
According to IronKey's Web site, its Mac OS X encrypted personal USB flash drive is in beta.