Other imaging formats are supported by vCenter but IFW is missing.
It might be worth an inquiry by Terabyte to VmWare to see if they are interested in adding support for 'tbi' files.
Failing that, perhaps the option to create images in a format already supported (such as Acronis 'tib' files)
or maybe a converter for after-the-fact use (eg. 'tbi' -> 'tib').
Any interest by others?