The issue with both of my Nightreaper lights is that the button would not work at times. I really wanted a new one but they apparently don't make them anymore. It would be neat if they could license the design to SF and let them run with it. I miss the switching of the Nightreaper and the tactile feel of the button.
I suspect the issue is with poor QC and materials. The Nightreaper was definitely a Chinese light when compared to the fit/finish of SF.