Are file externals good enough to release 1.7?

I was looking at the proposed backport for issue 4000 (copies of file
externals) to 1.7 and I'm not sure it fixes the problem--all sorts of
things don't work. As far as I can see the fundamental problem is that
file externals are always created at op-depth 0, even if the file
external is locally added or copied:

http://subversion.tigris.org/issues/show_bug.cgi?id=4000
http://subversion.tigris.org/issues/show_bug.cgi?id=4001
http://subversion.tigris.org/issues/show_bug.cgi?id=4012

Has anyone been using 1.7 to create/modify file externals? Is the
current behavior good enough to release?

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