pkgsrc on opensolaris - is gcc rebuild still required?

[Jonathan Groll <lists%groll.co.za@localhost>]

The pkgsrc users guide says (relevant up to and including solaris 9)
"It is recommended that an external gcc be used only for bootstrapping,
then either build gcc from lang/gcc or install a binary gcc package,
then remove gcc used during bootstrapping."

Is this advice still relevant? I'm running with a recent opensolaris
build (solaris 11, nevada) which comes with the sun freeware version of
gcc  - 3.4.3.

Is there any merit to using the pkgsrc gcc, or is the 'external' gcc
sufficient?

Many thanks,
Jonathan.