Bug's are back up guns and shouldn't be carried without main, same for main no carry without back up.
LCP+LC9 is good ccw pair just like the g19 g26.
Ankle carry is good when you have iwb, because if you fall down you won't break both guns or something.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©