What is an consumer camcorder ? <$2K USD, <$4K USD, <$10K USD ?
I am confused here. EOS-5D MKII + Cannon lens is <3.5K USD.
OK, this maybe more than your average mum and dad will want to spend, but these users are generally reluctant to spend over $300 USD anyway.
I would put the EOS-5D MKII firmly in the hobbyist/enthusiast bracket.
Too expensive ? The same argument could be levelled at the Pioneer KURO - this panel is 3x more expensive than some others, yet most would consider it a consumer product.
If you are in the market for a quality DSLR, and a quality Camcorder, the EOS-5D MKII will be much cheaper than buying two separate devices.
MY argument against DSLRs for several years now was, "yeh, nice stills, but where is the video". Well, this has been fixed now.
Cruzed over the VIMEO, and I found the best looking videos I had ever seen using the EOS-5D MKII, and it is less than $3500 USD !!
I have also seen a few tests using cheap lenses on this camera - no significant change in image quality. Genuine CANON lenses are really only needed to get the best out of the 21Mpixel stills, and are not really needed for only 2Mpixel (1920x1080) video.
Want to experiment with depth of field (DOF) to get that professional 'movie' look in your videos - the EOS-5D MKII can do this with correct lens selection. The 'consumer camcorders' you may be referring to will most likely require an expensive (eg $4K) and very bulky DOF adapter, and then you will still need to supply lenses.
So, for $3.5K, the EOS-5D MKII is actually very good value.
BTW, can any camcorder in this price bracket match the EOS-5D MKII in low light performance ? - I doubt it.
Ergonomics look ungainly at first look, but, by the time you add a quality DOF adapter (on rails) and then your lens on top of that, and the larger battery to power it all, to your regular camcorder, then the EOS-5D MKII suddenly looks like a nimble light weight in comparison (cheaper and better image quality too).