That is a good photo of Rog's Tamrac case.
The original poster was using a Canon 5D, so this suggests that he may be a scenic panorama shooter. Therefore, he needs the ability to get the camera out for shooting within a minute or so. This Tamrac case photo would be usable for that quick. The only thing is that some of us are clumsy when we can't see our feet. Personally, I have tripped over things when the case is riding on my belly that way, but maybe it is only me.
I use a Canon 7D, which is about the same size, but with a longer lens for wildlife. Since wildlife is not patient, I need to be able to whip the thing out in just a few seconds. So, the case that I use is a LowePro case very similar to the Tamrac case, but longer. I carry it on a shoulder strap over one shoulder and my neck, so it rides over my right front pants pocket. That keeps it out of the way to see my feet, so that helps me. The top flap on LowePro is hinged the other way (so that it flops forward), and I bypass the zipper with a Velcro strap, which makes it quicker. Or, I can zip it up to maintain the All-Weather standard for stream crossings and such.
The problem with LowePro case is that it is heavy, and that hits the heart of anybody on BPL. Mine is effective (I've used it this way for years), but I really needed to cut the weight. Just within the last month or so, I have purchased another case by Kata, but I haven't done more than test it. The Kata case came with an excellent shoulder strap. Unfortunately, it was too heavy with metal fittings and such. I replaced it with a thinner strap that is still more than adequate, and I replaced the shoulder pad with something lighter. That saved me something like 9 or 10 ounces, which is a big deal.
The scenic shooter may keep the camera body mounted with a standard panorama lens, and those tend to be shorter. Since I shoot wildlife, the longer lens must be mounted 99% of the time. I can drop a short lens on for getting a wildflower, but then I immediately shift back to the wildlife lens.
So, a lot depends on what kind of a shooter you are and how much camera weight you plan on carrying. I need a case that is good enough that I can trip and fall flat on my face on the trail, and the camera is still protected. I've tested that.