Yes. Not the most scientific test but I’ve been using the same GMK set for 3 sets of box switches now. Box red, box pale blue and Hako clear (all retooled). I’ll probably try with my Led Zep set on the next round.
The Aero set does still fit well on regular mx stems though. So, I do not believe it has been stretched out. In fact, I just put the Aero set on some mx clears and they are super tight as expected.