…in a comfortable fixed blade.
I like neck knives, and I own several of them (one of the best is the SR Warden). They are light and compact, so just ideal as a back-up blade. The drawback is that they are really uncomfortable for long tasks: a short, squared, thin handle is not ergonomical at all.
Neck knives are commonly available with or without handles. The first ones are in practice “miniatures” of fixed blades. The second ones are skeletonized, which I prefere…
…because it’s easy to transform them in a strong and confortable fixed blade whit little effort. That requires just 1,5 mt of paracord (or other wires available), a piece of woods, and of course you’re neck knife.
First, cutting a piece of wood, long roughly 14 cm (4 1/2”), and thick as you’re thumb
And round the two extremities of the woods
Now go to baton the wood, until you reach the middle of it. Make it carefully, you don’t want to split entirely the wood, just make a cut until the middle of it
Now, you may insert the skeletonized handle of your knife in the wood
And wrapping it whit the paracord, I used 1,5 metres long to do it
(note: apologize, I had so less time available this morning, just 10 minutes, so no pics about wrapping technique, but it’s really easy. Also you may use different wrapping knots of course, the important thing is that it works 
Now you have a confortable, strong fixed blade. I may ensure you that is more comfortable than most of my fixed blades, and all my folders 
[img]http://img535.imageshack.us/img535/8606/img3745vi.jpg[/img][img]http://img62.imageshack.us/img62/3070/img3746k.jpg[/img][img]http://img708.imageshack.us/img708/580/img3747t.jpg[/img][img]http://img855.imageshack.us/img855/6782/img3748im.jpg[/img][img]http://img13.imageshack.us/img13/5493/img3749t.jpg[/img]Here is a short video showing the results
http://www.youtube.com/watch?v=-5mg7j7Q1VA&feature=youtu.beHope you enjoy, ciao,
Alfredo