It looks as if some wedding videographers are switching from using camcorders to digital SLR cameras with the facility to shoot video, and presumably the facility to shoot video at some length, judging by this extract from an advertisement for a used Sony HDR-FX1 camcorder.
In fact, the guy is selling both of his FX1s.
The fact that some wedding videographers are switching to digital SLRs is is probably old news to you pros, but I just thought that it was an interesting example of what might be a long term trend.
I am selling my beloved Sony HDR-FX1's after changing to digital SLR's for video.
This has been my B wedding camera for about 3 years.
(the other cam is his A wedding camera.)