I can think of one good reason to use the Ronin as an ice pick... to make sure you didn't get unlucky and get a piece of steel with a defect that would fail when you really need it.
I have a set of Henckels kitchen knives... probably 8 years old now (I'd buy something else today, knowing what I know now). I was using the 8" chef's one time, in a fairly modest way, to ice pick some ice cubes apart that had frozen together in the ice tray. We're not talking a solid block of ice... just separating cubes that had frozen together.
I'm no tool abuse bozo. *:O) This knife should have easily performed this feat, but about 3/4" of the tip snapped off cleanly. No bending evident on either piece afterwards, just a clean snap. And I was not prying... just stabbing straight down into the ice bucket.
I strongly suspect there was some kind of problem in either heat treat, or a grain boundary defect in the steel. But I do suspect that the tip bent slightly as it found it's way around a cube into a void between cubes.
Luckily, Henckels replaced it, no questions asked (took about 6 weeks from what I remember, though).
Anyway, if you are going to depend on a knife for self defense, you oughta use if fairly hard in utility or training chores for a while just to make sure you didn't get a bad piece of QA/QC. IMNSHO, anyway.