Last weekend while cutting a bunch of these
I also cut one of these.
When I've heard about rotary cutter injuries in the past, I wondered why anyone would have their fingers over on that side of the ruler anyway. All you have to do is pay attention to what you are doing and take your time... Oops!
So now I know the trade-off for that speed and multitasking: a slightly smaller finger. It still hurts, and I tend to bump it on everything I pass. On the positive side, I didn't bleed on the fabric!
To all you quilters with full fingers in tact, slow down and be careful -- it happens to the best of us!