I have seen guys wearing 6 inchers which to me is pretty much borderline. Certain units and specialties as you know get much more leeway about their kit, but day to day 8-10 inch is still the norm.
This is true. My cousin is black ops in theatre and they wear tactical boots with running shoe type soles when doing urban ops. But then again they have multiple footwear depending on terrain.
I just think about my jump boots and cringe at the thought of low cut during that kind of op.
Granted off trail is rough I also have seen ankles go on clear rocky trails as well. People twist ankles in tevas stepping off curbs.
SKam