[libunwind] libunwind versus ecc's libunwind

[Johan Walles]

"http://www.hpl.hp.com/hosted/linux/mail-archives/libunwind/2003-December/000133.html"; 
says: "thanks to the addition of the _Unwind_*() routines, libunwind can now
be used as plug-in replacements for other unwind libraries, such as
the libunwind.so shipped with the Intel compilers."

Has anybody attempted replacing Intel's libunwind with this one?  How much was 
this tested?  Any problems?

  Cheers //Johan