Just some thoughts on the issue, to play devil's advocate:
It is recommended that you capture/ingest HDV in FCP as Pro Res, as the Long GOP of HDV makes post production slow as molasses with the constant "conforming" of everything back to a legal Long GOP format. But yes, FCP now has just over 50% of the professional post production market, according to NAB's annual marketing survey done just before the convention in Vegas in 2009. Avid has dropped to something like 19% of the professional post production market now. Vegas and Premiere Pro are down into the single digits.
DSLR's are considered pro-sumer video, not pro. And HDV is considered a pro-sumer codec, not fully pro coded, due to the very high compression and limited color space. AVCHD and AVC-Intra are considered more professional codecs, due to the large color space it's able to handle.
And even Panasonic's tapless P2 is moving from DVCPR0-HD, an long time industry standard, and reliable format, to AVC-Intra. Seems these camera makers can't create enough different codecs that cover the whole spectrum of consumer, pro-sumer, and professional markets, fast enough. Even the term "High Definition" refers to so many different codec of varying quality, and so many formats of hardware, it's just a can of worms. So much for Industry Standards...
