It's definitely a game changer, and I hope that the cross polination results in some cool gear from both sides.

FWIW, after working with the HX1 and the XR500, both of which are "crossover" cameras, I find each does better at it's primary "purpose" than the camera for which the "secondary function" is the "add on". The video from the HX1 is "OK", but the stills are the better output - conversely, the XR500 stills are "OK", but the video is superior. It's a toss up which one to grab, so I stick them both in a small camera bag... but I wouldn't feel overly constrained with either camera for most shooting situations.

Still, the 5D MkII has changed things - while I can't see it as a "main" video camera, it makes enough sense to me to dream of a Sony version... with maybe a few less compromises. It is frustrating to see what can be done with a DSLR-V, yet it's still not a "video camera" in many ways.

I think a couple more years we will see convergence and maybe a "one camera does it all"... maybe. To me a DSLR-V with manual control and interchangeable lenses "could" become a "main" camera for many purposes that I would use a "big" video camera for, and a couple smaller cams like the XR500 would fill the bill for multicam/b-roll.