First, yes on the PM2 M4 DLC with jade G-10!!!
About the CBB lock on the Manix. I actually had a change of heart about it due to BHQ model.
I had two of the Manix LW over the last couple of years. Gave one away, and even though I kept the CTS-XHP model, I didn't use it much due to the lock. The LW handle is way to slick for this lock; for me anyways. Flew out of my hand on several occasions, and had to re-profile it twice due to chipping after it hit the ground.
Now, having the DLC M4 version of this knife, I realized two things. The G-10 makes for a much more secure grip on the knife while trying to close it. That, combined with the spring feeling softer than the LW models, makes me actually like the CBBL now.
Would I try a compression lock Manix? Probably. But PM2 (my favorite of all time) already scratches that itch. And my new found fondness for CBBL doesn't make it necessary.