Isn’t HDV just too huge a data rate/stream to edit with?
HDV in 1080i format is the same bitrate (25Mbps) as DV is. However, depending on the system, you may experience slowdown on the system, depending on whether you’re editing Transport Streams or with an intermediary codec such as the Cineform Connect HD codec. As mentioned above, HDV editing experiences can be just about the same as editing DV. A reasonably fast computer can manage the bitstream without any trouble.