I'd seen this lock before, I can see that from a security pt of view, it is most likely much more secure than any coil lock, but for touring a coil lock is always going to be more convenient because one can quickly lock your bike to odd shaped objects-a tree, a picnic bench, whatever-and for me, thats much more important than pure strenght or a lock not being able to be cut.
I know its always a crap shoot with thefts, risks are always there, but usually one doesnt leave their bike alone when on tour that much....(touch wood)
Im also leery of having a key for a lock with me on a trip, but thats just me.
That's true. On past tours we used long cables and they worked since our bikes were not stolen. That said, we were rather paranoid about not leaving them unattended.
While it is less versatile than a cable, it appears to be far more secure. Perhaps even as secure as a U-lock without the weight.