I'd suggest the SAKs that folks have said. I also question "my" need for a locking blade. I really can't think of when I'd be in a camping state and need to lock a blade. I'm sure there are reasons, but I don't see myself stabbing anything that would not allow me to grab a stick, fashion a point and then stab with that. Just my take. I'm planning a big hike and debating the simple fixed blade (titanium backpacker from Daniel Fairley) and a VIC Classic vs a SAK farmer. I've yet to figure out how to cut my toe nails effectively without buggering them up and having to sleep in a sleeping bag with the little "burrs" digging into the nylon or worse yet slipping and cutting a toe. I now use use big, heavy toe nail nippers and they are well, big and heavy.
I also agree pliers are a force multiplier.
I guess the answer is really to be had in front of the kitchen scale and figuring out the lightest combo that achieves the most.