Except, perhaps, for the spearos, there is no realistic reason a diver would prefer a sharp tip over a blunt one.
It's not uncommon for solutions that seem acceptable in one situation to turn out to be disastrous in another and before adopting any piece of gear it should be considered from as many perspectives as possible. Unfortunately, it's hard to see past ones own training and experience, which is why I have a shelf full of "well, it seemed like a good idea at the time" junk that I've retired over the years, including a BFK that would make Mike Nelson envious.
What might be tolerable or work acceptably well for a single tank recreational wetsuit diver can be a mess waiting to happen in other circumstances. Imagine your valves are tangled in something. The water is cold and you're in a drysuit with dry gloves, where a puncture is both easier and far more serious. You're carrying a couple of deco bottles and an argon bottle, all of which tend to get in your way and to reduce your maneuverability and flexibility. Add a light strapped to your hand and a battery cannister on your hip and now you've got hoses and cables running all over the place. Let's really pile it on: you're also deep inside a wreck with no ambient light and the silt has been stirred up so badly that you can barely see your hand in front of your face. Perhaps in this situation a point makes sense - easier to stab yourself and put an end to your misery - but otherwise the risk/reward ratio says that a point on your knife is more trouble than it's worth.
Questions are good, as is examing answers, but honest injun, you don't want a point on your knife. You need a slashing and prying tool and the less dangerous you can make it, the better.
It's not uncommon for solutions that seem acceptable in one situation to turn out to be disastrous in another and before adopting any piece of gear it should be considered from as many perspectives as possible. Unfortunately, it's hard to see past ones own training and experience, which is why I have a shelf full of "well, it seemed like a good idea at the time" junk that I've retired over the years, including a BFK that would make Mike Nelson envious.
What might be tolerable or work acceptably well for a single tank recreational wetsuit diver can be a mess waiting to happen in other circumstances. Imagine your valves are tangled in something. The water is cold and you're in a drysuit with dry gloves, where a puncture is both easier and far more serious. You're carrying a couple of deco bottles and an argon bottle, all of which tend to get in your way and to reduce your maneuverability and flexibility. Add a light strapped to your hand and a battery cannister on your hip and now you've got hoses and cables running all over the place. Let's really pile it on: you're also deep inside a wreck with no ambient light and the silt has been stirred up so badly that you can barely see your hand in front of your face. Perhaps in this situation a point makes sense - easier to stab yourself and put an end to your misery - but otherwise the risk/reward ratio says that a point on your knife is more trouble than it's worth.
Questions are good, as is examing answers, but honest injun, you don't want a point on your knife. You need a slashing and prying tool and the less dangerous you can make it, the better.
