Barbara Hannigan Sings (and Conducts) Mozart

Barbara Hannigan is an incredibly talented singer/actress, and a champion of 20th and 21st century music. She is also a conductor. I keep trying to decide if her performance in this set of Mozart arias is super-impressive, or if she's just showing off. 

Of course, there are instrumentalists (usually pianists or violinists) who conduct their own concertos. Is this odd because she is a singer, because she is a woman, or both? Or is it way cool? I think the answer to all these questions is "yes." 

In the same concert (available on YT and on the GSO website) she also conducts a Rossini overture and vocal/performance works by Nono and Ligeti.