If this knife may be a last resort let me say that it is REALLY IMPORTANT that it function WELL!!! Kinda like motorcycle helmets . Got a $10 head ? Get a $10 helmet .
I carry a Gerber Combo Tool . I used it a bunch when I was driving long haul truck . It served me well . It was well worth the $50 or so I paid for it . If it had broken when I needed it the sour taste of failure would outlast the sweet taste of low price . You get what you pay for .
Many good knives are used by hikers and other outdoor affectionados that equate weight to waste . One good blade will serve you well and for a long time .
Good luck in your choice .
SASS AMERICAN LEGION NRA