Hi Andre
No hammer needed. 
I've always set mine to Adobe RGB. I also question why one would bother shooting RAW + JPG. Why?
1) You end up with less space on your CF Card, lower buffer too
2) No matter what, the RAW file will have more "headroom" for exposure or file adjustment, so why shoot JPG
3) As much as I'd like to get it "right in camera" one of our biggest issues is WB underwater...so...why JPG if WB adjustments are better in RAW than JPG.
4) Since I adjust the camera's contrast setting to a much lower value, then the in camera generated JPG is rendered pretty flat too...back to the Raw file to fix it.
5) Now, my output device is the HP Z3100 and it does have a gamut that is slightly larger than sRGB given the right media, while I cannot properly see the results on screen, the print does stand out. 
6) Oh, my storage device does show CR2 files, it's the Hyperdrive Colourspace. My 5dmk2, 7D and G10 raws are viewable.
7) Since I never show the RAW file to my clients, I always just process the images in Bridge then CS4 (soon 5) I don't use Lightroom so can't comment on that. Photoshop/Bridge will display the correct colour space.
Also ACR does support the picturestyle presets so if you were really pressed for time, just click on them when processing the CR2 file.
Nuff said me thinks.
Stu