I've got an E2e from 2003. It's got turn for constant on and witness marked push on tailcap. A buddy of mine just got an E2D. The E2d has no witness marks and a push on, click on tailcap. Unlike my E2e, to work the E2D you screw the tail in all the way (which results in no light or anything unlike my 2003 E2e) and then can push on or click on. For lock out, you turn counter clockwise out a little. Is this how all the new tailcap models work, or is this design (with no witness marks) specific to the E2D? Are the current E2e setup to work like this where one screws them in all the way for push activation?