Problem with Timing of Subject GRE Reporting for October Tests

[hopesandprayers]

If I take a subject test in October, the ETS page says I will know the result (it will be available online) by November 24th, but won't get sent to universities (or won't be there until, this is a little unclear) until December 7th.

This provides me with a problem because some of the schools I wish to apply to have deadlines of December 1st.  The subject test is optional for my intended program (statistics).  Do any of you have experience with self reporting an optional test and having the official result get there later?

I have called the universities in question and they say to attach the unofficial (self reported) score and the department will PROBABLY take the score.  I don't like the word probably so that's why I'm asking here too just in case anyone else has had similar experiences