Its the whackiness that adds to the cool factor in my opinion.
The 224 Cheetah seems like a more logical cartridge for this particular project, since the OP said the donor was a 7x57 in its first life.
There was a great article on the two 22x57 wildcats out there in a recent issue of Precision Shooting. It grabbed my interest, though I'm not into cartridges that use so much powder compared to bore diameter (notice I didn't say "overbore"!).
Again, any of these carry a high "cool factor" in my book and for someone who is really into tinkering with wildcats it'd be awesome.
