I read the SBVR "specification" about three years ago.
At the time I came to the following conclusions:
1. Most of what SBVR claims to be able to do can be done with ORM2.
2. The SBVR "specification" is ambiguous and thus I don't see what value it has.
3. It seems to be of help to those people who want to create lots of verbose documentation. (That will probably never be read again)
Of course there are those who say that SBVR is wonderful. But I have never read a coherent justification for this claim.