When closed, the CQC7 has a gap on the back side between the disk and the handle big enough to access the disk. The cut-out in the front is better of course, but the gap is workable (at least it
looks workable). This is what I meant by "workable, though awkward". I can deal with "workable" if I like the knife enough.
The disk on the A-100 sits almost flush against the handle, there is no gap at all. Even if one was willing to cut a notch out for it, that wouldn't work for two reasons. First the liner is right there and the same height as the original handle surface so there still would be no gap. That's important because second, since the disk does not overhang the edge liner it still wouldn't be accessible even with a notch. Strangely, the disk does not seem to be centered over the handle.
These two videos give good 360 degree views of both knives:
A-100
CQC7
Left-handers know this kind of thing is very common, across many different makers. It's hard sometimes to understand why. Sure, there are more righties than lefties out there but wouldn't the ability to open a knife either hand be a benefit sometimes to righties too, especially for a tactical knife that might very likely be needed in a stressful, unorthodox situation?
Well, that's probably a rhetorical question.

And just to be clear to all, my comment of "count yourself lucky" was not sarcasm, I really meant it that you're lucky not to have to face this kind of thing when a good knife comes along. This isn't the first one I've had to take pass on.