Nope. They haven't demonstrated a level of routine quality or usability for me with the material in Dragon and Dungeon, especially since I don't plan on switching to 4e. Even if I just wasn't using the core PoL setting, but was still playing FR, they've rendered down that setting in 4e to conform to the core flavor assumptions as much as possible to the point of absurdity. As such they've really hurt any chance of ever getting me to subscribe, which was already going to be difficult given the bad taste in my mouth after they killed the print magazines at the height of what amounted to the magazines' second golden age.
I will however reserve the price of a month's subscription in a jar on my desk at work and use it to buy a beer with which to toast them if the major digital tools of the DDI that were already supposed to be out end up getting canned or out-sourced. Call me doom and gloom, I prefer to call it pragmatic based on what we've seen so far with the current DDI progress and in previous digital efforts.