Putting aside for one moment the workflow and broadcast complications of 30fps in PAL territories, on an aesthetic level I'm not convinced 5D footage converted to 24p or native 24p 7D footage looks more "filmic" than 30p.
I'm a professional director/editor so I understand the principals involved, but 5 frames a second is not, IMO, enough to render footage "video like". Factors such as tonal range, DOF and shutter speeds have more effect on whether something looks like film or video. I've spent many hours in edit suites and telecine rooms watching 35mm, 16mm footage, as well as editing with every video format that's been around in the last ten years - The footage from the 5D (even at 30fps) looks as filmic as any digital footage I've seen.
Everything I've seen from the 7D at native 24p looks no more "film-like", IMO, than unconverted 5D footage. Again, I understand why 24p is desirable from a workflow point of view, but i don't buy the aesthetic argument.