Glamdring:
Sorry, I'm not set up to do pictures, and I haven't made one of these for some years.
Basically, you just have made a leather (or these days nylon) case that DOESN'T look like a traditional speedloader case.
A speedloader case LOOKS like a speedloader case. You want something squared off and box-like that looks like a beeper/cell phone/knife/whatever case.
I made several different models.
One was a larger modified "dump" case.
For those too young to remember these, they were from the days BEFORE speedloaders. It was a case that held 6 loose rounds. When the top flap was unsnapped, the case section folded or hinged down so the rounds would drop into your hand.
I simply made a larger case to fit a speedloader.
The second type was a simple case with a flap. Unsnap it and you grabbed the loader by the knob. This worked Ok, AS LONG as you didn't turn the knob and drop the rounds.
I occasionally made a case with a "lifter" element so that when the flap was unsnapped and lifted, the loader was pulled up enough to grab the sides.
In all cases, the case was made in a squared off shape, so it didn't have that round loader look. You rarely see round cases of any sort on peoples belts, but you see enough box-like cases that you no longer really notice them.
As additional "camouflage", you could add something like a logo of some type. Nokia or Motorola is distracting enough.