Some things I noticed which might help with future videos. Please forgive me if i missed something, I only saw the video once. Please also forgive me for what might seem to be a long list of critical points, I'm not trying to discourage you from making videos -- I'm trying to help you to improve them.
Firstly and most importantly by a very long way, remember that you have no control over your audience, and people looking on might be looking less at the subject matter than at how it is presented. Their reasons for watching might not be reasons you like very much. You might well at some time be faced with people calling you a "knife nut" or something like that. They will use whatever evidence they can lay their hands on, and they may be selective with it and even bend it. You should try to avoid anything which will play into their hands. It is doing exactly that, and it is unprofessional, and it shows your own views in a very poor light ESPECIALLY when you are handling a knife, to refer to law enforcement personnel as "the fuzz". In the opening moments you gave me the distinct impression that you were looking around for examples. This made me feel secondary. The viewer needs to feel more important to you than passers by (or those heading your way to arrest you
).
It's all right to have a pause in the speech. In fact it's better than saying 'er'.
You talked a little about knife law but I don't remember that you mentioned locking folders. I don't remember you stating the exact length of the blade of this knife to explain where it fits into the statutes.
You mentioned the maker's name, but you seem to assume that we'll all know who that is. I understand that you might not want to seem to be advertising, but I think you'd be forgiven for mentioning at least the town and country of origin!
You compared the steel of the tool under review with that used in your Leatherman tool, but the comparison was very off-hand, unreasoned and pejorative. It would be much better to explain a little of your reasoning. The Leatherman is made with stainless steels, and that might easily be more important to someone watching than the edge holding properties of O1.
Generally you spoke a little too quickly and not always clearly. Remember that many people will be listening on systems (like my laptop) which are capable of only very poor quality sound reproduction.
Adding to jonajuna's comment on safety, in engineering we like clothing to be in good condition, as it can be an unnecessary hazard when it catches up with things. Bracelets are also frowned upon. Personally I would always avoid touching the working edge of any cutting tool unless absolutely necessary.
You showed the tang being used with a firesteel but I don't think you explained its most important purpose.
You've done a lot of work to produce your video, you have some good production techniques, and I think it would be helpful to anyone thinking of buying something of that nature.
Thank you.