Are there other uses for the Elder Scroll?

You can donate it to the Orc Librarian in the College Of Winterhold, for about 2000 gold and his eternal gratitude.
Aside from that I don't think there is anything you can do with it.

The elder scroll you gain from the main quest is now used in the Dawnguard DLC as well. If you sold it to the orc you'll have to buy it back from him for 4000 gold. You also gain two more elder scrolls. The new two can be sold to the Moth Priest for 6000 gold in the Dawnguard DLC if you sided with the Dawnguard. Alternatively you can just give him the scrolls for free (much to his astonishment).