I tested the SaberCut Saw and the wire saw today. The SaberCut sailed through that pine trunk in 15 seconds (it had a bit of a head start because there was a slight wedge where I had previously chopped). The stitching in the handle did come loose after about 13 seconds. Luckily I had spare webbing that I carried to make handles for the wire saw. I repaired it and sawed through the remaining in 2 secs.
I have seen a video review of someone using this saw and it binding. I have never had it bind on me, whether on live, sappy pine like today or on harder dry wood.
I used the wire saw and could not make it even half an inch into the wood without it binding. The metal bracket also pulled open after a few seconds. I guess that was my fault for putting too much pressure on it. I put the loop into the split ring and continued but could not get very far. This is the type with the three strands of wire braided together.
Perhaps it works on harder, dry wood, or like someone said, on antlers and perhaps my technique was bad but be that as it may - I will not use it in future.
On the SaberCut Saw. I will replace the handles with my own webbing, knotted rather than sowed and I will carry spares as I can see wear & tear where the webbing hooks through the metal, so it will eventually break again.
Results of each:
I had previously sworn to myself that I will never post Youtube videos, but I took some video anyway. So my Youtube debut, just for you:
SaberCut Saw:
Handle stitching broke
[video=youtube;nCYKJv8LyPY]http://www.youtube.com/watch?v=nCYKJv8LyPY[/video]
After repair
[video=youtube;aOHRwIci11A]http://www.youtube.com/watch?v=aOHRwIci11A[/video]
Wire Saw:
Handle bracket split
[video=youtube;RvsN9hb_T5U]http://www.youtube.com/watch?v=RvsN9hb_T5U[/video]
After repairs
+ Kershaw Folding Saw for reference:
[video=youtube;nRTCLSYvc94]http://www.youtube.com/watch?v=nRTCLSYvc94[/video]
Tried thinner wood
[video=youtube;RcioZRCCOHo]http://www.youtube.com/watch?v=RcioZRCCOHo[/video]