As a fellow leftie, I stay away from anything that is blatantly right handed. I've learned to use a lot of right handed stuff, but some things just won't work, like liner locks and right hand-only opening mechanisms.
As such, I tried to find a multi-tool that not only had all the doo-dads I wanted, but that was also easy to use left handed. I got the latest Gerber multi-tool. If you look around, they have an amazing variety of options. In fact, there is even a web site from Gerber that allows you to build a "custom" multi-tool with just the tools you want.
With my Gerber, I got the usual assortment of screwdrivers and can opener, which are mandatory for a multi-tool, but I also got BOTH a file and a saw. The saw on the Gerber is the best I've ever seen. It uses easily replaced jigsaw blades, and you can buy them for wood, plastic, metal, you name it. A LOT moe versatile than most saws. While it isn't as long as the wood saw on my SAK Rucksack, it will cut a lot more materials and can be replaced when the blade gets dull.
The only thing this Gereber *didn't* have was scissors, and I remedied that with a small Wenger SAK that a friend gave me.
The pouch on the Gerber is also top-notch. It has a main pocket for the tool, and a smaller accesory pocket. In the small pocket I keep my small SAK, a 1/8 inch ferro rod on a plastic handle, a small diamond rod sharpener, and a plastic tube containing 8 extra jigsaw blades. If I could only have "one" thing in a wilderness survival scenario, this would be it, for the versatility offered.