To answer your question: I did... but the way of doing it was horrible:
Brand new servers (HP Proliant DL380 G4), new OS (W2K3 SP1) and existing remote SQL server (but new, running SQL2000SP4).
Installation of BE10.5484 or 5520 => impossible to make a remote SQL installation.
So, MSDE installation and than transfer the MSDE to SQL => does not work
So, test with another server W2K3 and another SQL server => possible to make the installation on this server, and then move the SQL to the required SQL server
Now... impossible to patch the BE server...
But now if I want to make a reinstallation of BE with the SQL remote... IT WORKS... but still impossible to patch BE.
If you want more information, I can give you all the details (log files, emails with Veritas-Symantec and so on)
What you can do, is take the LDF and MDF files (located in the C:\Program Files\VERITAS\NT\Data), copy them to your SQL server, attach them within the enterprise manager (see if it succeds), and then with the BEUtility transfer the database from your actual server to the SQL server.
But be aware that you could lose all your job definitions, schedules, everything (that happened to me, I was VERY happy and thank you know who ;-)).
Yours.