So Dragonborn, of course, introduced the Bend Will shout which, in its full, 3-word form, will charm a dragon and make it ridable.

Now take this in context with Blackreach, the huge and... cavernous cavern with a plethora of nasty beasties. One of these beasts in particular is called Vulthuryol and is a dragon that can be summoned by giving the large orange orb in the middle of Blackreach's dwarven ruins a resounding Fus Ro Dah!

Now I'm wondering if you have a character that get all of Bend Will before killing Vulthuryol, can you use it to tame him and ride him around Blackreach?