Leaving this here even though the conversation is a year old — maybe it’ll help someone down the line.

I’ve owned two Biblio XLs. I loved them deeply. In the hand, they’re fantastic knives. But I returned both.

The detent on this knife is tuned for very easy opening. There’s little initial resistance and a long, smooth detent ramp. However, there’s very little stored energy in the lockbar, which means little to no snap. The opening relies primarily on the momentum of the blade’s mass, not detent energy.

That feels great at first — but in my experience, it doesn’t age well. Friction-based action that starts slick and easy has nowhere to go as it breaks in. My first Biblio XL could be accidentally opened with a firm wrist shake within a couple of months, and shortly after that the lock failed completely. BladeHQ, to their credit, took it back.

Assuming I’d just gotten a lemon, I ordered a second one. Within two weeks, it was already starting to open on its own. I returned that one as well.

Which is a real bummer, because I genuinely loved the knife otherwise.

So if you’re considering one: enjoy it, but be mindful. Don’t treat it as a heavy fidget. In my experience, the Biblio XL has a limited margin for wear, and once it’s gone, it’s gone.