the pub defender is very thick behind the edge in an unmodified state.
if you want to take the edge down to 24 degree's per side without doing a hollow grind on the cutting edge, you end up completely overtaking the front grind (near the tip), and about 50% of the second grind (the main cutting edge near the handle).
after i sharpened mine to 24 degree's per side on the main cutting edge, and 35 (may have been 45.... somewhere in there) per side on the front portion it was a fine cutter, for anything that didnt require a thin blade it was as good as anything i've had. but it took a loooooooooooong time to take away that much metal.
in an unmodified state, i see it as being meant for pure hardcore abuse - where you need something you can randomly stab into things at full power and not worry about it breaking (ever, under any use).
i'd never personally buy it unmodified as an edc cutter - but if you make it more accute at the cutting edge it makes a heck of a prybar knife. theres a lot of debate about prybar knives not being knives - but for me prybar knives hold a very specific and useful place - they are for prying open car windows when your locked out, putting out heavy staples and prying apart wood etc etc etc when you cant get to anything else thats better suited for it.
for those tasks, the pub defender was excellent.
the killer b was about the same, in an unmodified form with a factory edge i couldnt cut fabric with it. but after it was sharpened (again, pretty much over taking the forward grind and half of the main edges bevel) it was a great little prybar cutter. once it was at 24 degree's it would cut like anything else. by cut i mean it would initiate the cut as good as anything else i've had, not necessarily the most efficient though given its thickness.
if i had a lot of extra money, it would definitely be one of the knives in my collection.