I kept the neoprene sleeve on mine for 2 reasons:
1) I strongly believe that one of the reasons my titanium Snow Peak pots are so inefficient is that they lose a lot of heat to the ambient air as it blows past it; convection (air) is more efficient than radiation (flame). Yes they are light, but easily eat the difference in fuel over the course of a day.
2) The color changing material on the side helps ensure that you don't waste fuel on water that's already boiling.
As far as the locking issue, most of these hacks of using a Jetboil with a different stove involve cutting slots into or simply removing the locking ring. As such you don't really get this benefit. My Snow Peak Giga Power however does give me a little bit of this in that the pot supports are not perfectly symmetrical and since I didn't cut the slits super wide it creates a bit of pressure gripping onto it a bit. That being said, I have never tipped my stove over and if I did I think I'd rather just have the pot go spilling water than have the stove go with it. However, making it a rigid system does lower the center of mass and therefore making the system more stable.