Ok, I am not a professional but try to have so much fun with shooting as possible, so I have a sport event tomorrow. I take 5d2 and 7d with me, I don't own 1ds3. There is no need to shoot all the time, there is some time to manipulate images in camera to avoid manipulating them in a computer. I should transfer them as fast as possible. Could I take photos from 5d2 to 7d and edit them as well? I think I could. The only one missing feature is image cropping/trimming.
I am not sure how it will go in the field. I don't pretend it's the feature which let avoid editing in a computer after all, for achieving best results. No one is going to put Photoshop in 7d or pretend it works same way.
I told "might make sense". I am not sure yet it will. You are sure. Good for you.
The only thing I should aware of are stupid attacks which sometimes require defending, like in this case.
So let me tell you what I find interesting about your responses:
1. I disagreed with you but was polite and not personal about it and then actually provided my rational (I admit to sarcasm) but then you take my disagreement as some sort of attack and then use the word "stupid". So in fact, the only person making a "stupid attack" was you by implying an insult.
2. You are missing a key point entirely... Timothy_Bruce said he wanted to transfer files to an SD card and that is the most significant reason why it didn't make sense. There is no SD card slot in the 7D so you would have to have a means of getting the files onto an SD card which most reasonably would be a computer... but if you need to use the computer anyway it would be easier/better/faster to do the editing on the computer.
3. And the most interesting part is that you seem to have not quite understood the logic in the first place and questioned it. I do actually think Tim_Bruce might have been joking and then yanked your chain about wanting to edit and then transfer to an SD card. But being the sensitive soul you appear to be you capitulated and replied "ok that might might makes sense". When I disagreed you got defensive and firmly took a position on the side you were originally questioning and even continue to stand on "might" make sense.
Ahhh human psychology at it's finest.
Actually and frankly speaking I don't care if this SD or CF, because the result would be almost the same. The bigger problem is not with the memory card format but with editing files from other cameras. If the only reason you say, that it doesn't make sense is the fact, that 7d doesn't support SD cards, then ok.
And yes, you also didn't catch my intention of my answer ("Yes it does"). It was to be funny and like childy bantering.