I have also been considering a switch to HD via a DSLR
Only if you want more B roll.
The rolling shutters, lack of good/any auto focus (AF), and limited runtimes on recordings make DSLRs a nuisance for any serious shooting. I know there have been articles, and whole episodes of shows shot on them, etc -- but honestly I think it was all for show. The people who did that could afford better cameras. The SLRs were also so heavily converted with third-party pieces that you couldn't even see the SLR beneath all the add-ons.
Us normal shooters -- not studio TV production -- would be better off with a really nice true video camera that has been modded to take SLR lenses (assuming you need/want the depth of field). I've not gotten into this, mostly for lack of funds. Note that I have a Nikon D3s, and I've shot with some of the other Canon and Nikon bodies. Coincidentally, I'll try out a 5D Mk II tonight, for the first time. I think that's the only body I've not yet used.
Did Red ever finish their DSLR body? I gave up a year ago already.
(EDIT: Just looked at Red.com
. Nope! Vaporware, as far as I'm concerned.)