Two problems with that:
The awl is less easy to access in regular use, requires precise thumbnail application. In an adrenalated situation with motor skills in steep decline, it would become quite a challenge for precision anything. Also, if it comes to blows, you would probably cut the s--t out of your own hand.
An alternative (maybe); I'm not familiar with the Huntsman, but my Tinker has a back spring mounted ph screwdriver that is much easier to get out and is still a formidable addition to a fistload. For years, that was my main EDC weapon, along with some other socially acceptable items. I actually practiced with the Tinker. I think it would work, but never got into a serious confrontation during that time where its effectiveness got proved one way or another. However, I got tipped off to the awl hazard by someone who did have the experience.