LOL - I have about every major dSLR system available (Canon D30, 10D, 1D, 1DS, 1D Mark II - Nikon D2X - Kodak DCS-760 - Sigma SD10) and a large collection of top-notch glass for each, but I never leave on a photograhic expedition without my R1 in the bag beside whatever primary tool I need for the job.
Of course there are many systems including about any dSLR and a number of fixed lens digicams which are more appropriate for wildlife use. That was the point of the post - a sattire on using a non-wildlife suitable instrument for shooting wildlife. Notice I said I also took about 30 frames with my SD10 an 80-400OS :-)
The R1 is superb for what it does best - gives you more resolution than any affordable dSLR (by that I mean more than anything under a Canon 5D, Nikon 200D, or pro body such as a 1DS/1DS Mark II. It's a tremendous amount of sensor and lens for a small amount of capital. I find it to be a great little tool but not designed for action photography or anything requiring longer focal lengths unless you happen to be able to get close as I did in this example.
I purchased the R1 for a recent trip to Utah (as a backup handheld quick shooter)
My friend brought his Canon gear with a d5 and small zoom lens.
The R1 was almost the same size as his outfit but the responsiveness of his DSLR was so superior to the R1 I am now sorry i purchased it.
I previously had (gave it to my wife) the Minolta A2 That was a more compact camera that could easily be added for a handheld.
My main system is mf
The R1 images are very good quality and probably could serve as a primary camera for many.
As for shooting critters, I think there are many systems much more responsive.
There is a review on LL about this camera and its capabilities & limitations