We didn't buy them then, I won't buy one now. Aside from the handle attachment - which Chris Reeves solved before they were even popular - the problems were multitude.
They were heavy - the cross guard and grip added weight, the threaded plug even more. Knowledgeable soldiers learn better, you don't carry dead weight.
The blade profile is thick, and the swedge is so low it makes it even worse. It's a relatively poor slicer.
Most were also poor sticking knives, and that ability ranks low anyway. You need a knife to cut. The e-tool or bayonet is a better prybar.
The handle isn't big enough to actually carry much more than a fish hook, line, and some aspirin. You need more than that, you need a serious sized water container. That's the #1 priority.
The cord wrapping doesn't do much except make snares or bind sticks together. As a gripping surface it doesn't alter the round shape of the handle - you can't index it in your grip, and it's easier to twist.
There were about a dozen weak points commonly known at the time, and that's the reason why so many other makers were able to grow and develope designs - they didn't slavishly follow a fad, they made superior offerings. That's what sells on the market today in field knives, not the caricatured "battle knife" from a blatantly Hollywood beginning.
Yes, the original survival knife was a Randall, and it was a special one off for an aviator. Best to keep it there - a rarely used short term tool for someone completely out of his skill set.