Redondancy ! <img src="/images/graemlins/cool.gif" alt="" />

I lashed an OutdoorWedge II to the left strap of my backpack. The special locking feature of the plastic sheath seems positive enough to carry it upside down.

But it is only an addition to a folding knife + a Leatherman PST II on my belt + another smaller folding knife in my pant's pocket + a Cold Steel SRK in a side pocket of the backpack (next outing, I will try to fix this one horizontally, on the pack waist belt).

All items on my pant's belt (or in pant's pocket) are not easily accessible, as the pack's waist belt more or less covers them.
OTOH (I mean the right one... <img src="/images/graemlins/grin.gif" alt="" />), I can have my Wedge II out of its sheath and ready to cut in a second.