I see DTube is also offering steemconnect logins as well as allowing the posting key to be used directly now too.
I'm also integrating steemconnect into the front-end I'm working on (which is just a skeleton site at the moment). It's just another view of the blockchain, but will include video from various sources hopefully including DTube, DLive, YouTube and Vimeo, and will have some interesting features.
http://www.steemreports.com:81/
Yeah, d.tube has always allowed the posting key. A great feature. Feels very secure. Recently they added Steemconnect. I follow your progress with a lot of interest.
The use of Steemconnect versus direct posting keys seems to somewhat divide opinion among developers. I think jesta and heimindanger prefer direct posting keys. There are merits to both approaches I think. Steemconnect does reduce some of the security management work for third-party developers, but is a bit more centralising.