De-assist = removing the torsion bar to make it a manual opening knife. I haven't done that to any of my Blurs personally, as I think the A/O suits that knife very well.
If you're still considering options, I'd toss the Leek and Skyline into the mix. The Blur is a great knife, but it is somewhat similar in size and styling to the 0350 (both are Ken Onion designs, and the 0350 does sometimes get referred to as a Blur on steroids). If you want to get a feel for some different sizes and styles, the Leek and Skyline are a couple that I really like. They are very slim/compact and practically disappear in your pocket, yet they are still pretty robust EDC knives. Granted, they're not as tank-like as the ZT, but they don't need to be babied either.
If you're still considering options, I'd toss the Leek and Skyline into the mix. The Blur is a great knife, but it is somewhat similar in size and styling to the 0350 (both are Ken Onion designs, and the 0350 does sometimes get referred to as a Blur on steroids). If you want to get a feel for some different sizes and styles, the Leek and Skyline are a couple that I really like. They are very slim/compact and practically disappear in your pocket, yet they are still pretty robust EDC knives. Granted, they're not as tank-like as the ZT, but they don't need to be babied either.