That's exactly what I needed to know.
Good. Essentially you want to flex it a few times and it will become loose. Problem is when striking something with it, it can come loose too so be careful.
If I were to choose what I could carry it wouldn't be with the friction lock, it would be the auto-lock version.
Also, a longer baton is better IMHO. More tip speed is a good thing. (Quiet JoppaJ)