MT-TypeKey dual login?

So I just left a comment, in reply to one left by Raena, and a thought occurred to me: If I’m logged in to my Movable Type installation already, why can’t I already be logged in to my TypeKey account as well? It just seems silly to have to go through a separate login procedure to leave comments on my own blog.
Speaking of Movable Type, the web site has undergone somewhat of a makeover, and the old .org domain redirects to the link just noted. The new menu across the top left reflects all of Six Apart’s products, including the newly-purchased LiveJournal.