The blur is an amazing knife. And there are plenty versions available depending on what you like. You like a very fine, slicing capable edge? Go with one of the hollow ground versions. What something a bit more robust blade wise? Plenty of flat ground versions. You like tantos? Check mark. Serrated? Yeppers. Blunted tip model? Sold!
It seems that if there was a issue with the lock, it has since been addressed. I have quite a few number of blurs and none of them ever exhibited any of the issues some reviewers were reporting.
To be honest, one should not be applying any negative force onto a folding knife blade. There is always the chance of the lock disengaging and folding upon the user, and I should know because I am guilty of this more so than not. Liner lock, frame lock, whatever it may be. Some knives hold up better than others but the risk is always there. That being said, I have thrashed a few of my blurs and haven't had an issue yet. As long as your are using them carefully, even if you have to apply force upon the spine, you should be fine.
Get one and enjoy it.