I just received my two white and two red strobes along with the four Version 2 mounts that I ordered on Thursday. Everything looks great.
The strobes are amazingly bright for their size. Pretty cool really. I find that attempting to press the small switch with my fingertip is difficult, as it's somewhat hard to feel and just sort of presses into the finger pad without turning on. What I found is that a dime works perfectly in order to turn them on/off or to check battery level. By placing its edge over the switch, you can press downward gently and feel the switch positively 'click'. Works like a charm!
The mounts are cleanly made, and the lights fit securely into them with a snug but not 'too tight' fit. There is no chance the lights would ever slide out. The power switch is also accessible while in the mount, as is the charging port. They fit securely onto the legs of the P4 and seem to find a 'sweet spot' facing forward, sideways, or rearward.
Thank you gentlemen, well done!