Lightroom also does an absolutely AMAZING job on Leaf .mos raw files. Leaf's sales would soar if they bundled Lightroom free with every back....
My buddy Jimbo loves how his P30 files look in Lightroom as well.
It's nice that unlike Aperture, Lightroom's not afraid of the "medium."
I agree with Brian that the P-30 files look superior in lightroom to C-1, but right now in the beta there is a bug that crops the side off of the frames and lightroom is not automatically rotating the images.
The other issue I have with lightroom is it does not tether and after some of the Leaf software issues, I went to the Phase to get a stable workflow.
C-1 is still the standard for tethering and I think it will process jpegs very quickly.
I have also processing my A-22 files in lightroom and it improves them dramatically, almost to the look of the P-30, though in my testing, for my style of work, the P-30 files are easier to work than my A-22 files.
Still, I think Lightroom has a lot of promise and I look forward to the release.