I use the spaceship-like Mio sets. I always put the lid back on to cover the needle before disposal. Always. With every set change. This is not a new thing.
Yet somehow I managed to stab myself in the thumb with said needle while recapping. Um, OUCH! Just a slightly larger needle than my lancet.
Adding insult to injury, I didn't even get a free blood sugar check. I'd just checked it five minutes before and didn't want to waste another strip.
I would not recommend using an infusion set needle as a lancet.