Thanks. T6 should be relatively easy to find; I believe it is sold for mobile phones.

It is a nice knife, the first and only quality knife I own. In addition to the safety benefits, a solid lock makes the knife more pleasant to handle. It is a shame it (probably) makes it illegal to carry casually in the UK.

That said, for every day carry I think I prefer a multi-tool anyway, because it is more versatile. I have a smallish non-locking one, and although I'd rather it locked I am not convinced the difference is that great, at least for UK urban use. I'm not going to carry the RSK in addition to the multi-tool for weight reasons. My plan is to add the mini-RSK to a PSK, which is why I want to remove the pocket clip - to minimise its size. The situations in which I would carry the PSK should be the situations in which a locking knife becomes legal.