One of the main reasons (besides raw speed) AngelScript was chosen, is because it's so damn easy to bind to existing C++ classes. No need to create wrapper classes, fight with the stack or other annoyances all other scripting languages have.
Plus, Andreas (AngelScript's author) provides excellent support for nothing. Much as we do here
(shameless plug).
With that said, work has begun by Andreas for a 64bit port and I promised to help him. So I don't think it will really take long before it's done
Also, with the help of afb, a PowerPC port is in the works. I wouldn't know how long this will take because it really depends on afb.
To recap, I think it's worth waiting a little while longer to have native AngelScript support (at least for 64bit) than start writing wrapper functions for everything inside C::B (which would become obsolete anyway once the above ports are done).