Very nice!
I have grown very fond of my M66 2-1/2" and it follows me every where I go.
Mine is a -6 model with the IL but I fixed that right after I got it.
I got a hold of some industrial grade adhesive lock tite a while back and if your careful you can put just enough in around the lock mech its self and it hold the lock in the unlocked position with no problem.
I have been carrying mine and shooting CCI .357 HP out of it and have yet to have a problem.
I like those grips but like the boot combat grips better.
right now i have hogue bantam grips on mine and they work great.