There was a thread back a while ago that brought up the strength of narrow tangs like the Mora, USMC MkII, etc. It was pointed out that with a stick/hidden tang, you never really know what's in there unless you take the knife apart or (as some industrious individuals did) have it x-rayed. After reading and seeing some of the skeletonized "full" tangs on knives, I think this problem also exists for them as well. Heavily drilled/skeletonized tangs would not offer an overall strength advantage over a hidden tang, and might actually be weaker due to the inherent issues with making holes (radius, stress concentration, etc.). Now, I would not know about this if the makers did not show it, just as many makers will show a cross section of their hidden tangs. In general, I think its worth it to do some research before buying if strength is a concern in the use of a knife, and seeing steel with slabs on the sides doesn't always represent what is really under the slab.