Considering both sorcerous tricksters are owned by Disney, this is a match made in Svartalfheim.
This image was made just for fun, with color provided by Simon Gough, colorist on a bunch of amazing titles for IDW (and others).
Check out these frickin' amazing covers by the pair - exclusive to San Antonio's Heroes and Fantasies comic shop. The Doctors! All thirteen!
On July 23, 500 copies of each cover (Tenth and Eleventh Doctors) will be available in San An.