Somewhere on Doug's equipment blog - probably over a year ago - there's mention of a survival saw from a particular vendor. I picked one up, and still carry it in my pack - the advantage of the one that Doug recommended was the handles are sturdier, basically nylon webbing with good attachments, not metal rings which I have actually seen tear off when sawing (though I can't say about this particular model). The pocket chainsaw works, but when I'm out hiking and clearing trail with others as a community service (Scouts) I'll carry at least a sven saw, which makes quicker work of cutting.

My best friend for cutting though is a trusty Stihl 290 Farm Boss, although that would involve hihacking the thread. Great chainsaw, though won't fit in my pocket.