Streamlight makes good products. I use their 3xAAAA (yes, that's quad-A) LED Stylus almost daily.

At 5.5", the BatonLite's considerably bigger than a Mag Solitaire, and only about 1/4" shorter than an AA MiniMagLite. N-cells will be more expensive to replace, and harder to find than the ubiquitous AA or AAA cells, though with an LED, you should get better battery life. (The AAAAs mentioned above require a trip to Radio Shack, or are mail-ordered, rather than being able to buy in bulk at Sam’s or Costco. Ns are usually found at photo counters, like DL123s.)

I have no doubts that it can be used as a yawara or Kubotan--that's implicit in the name "BatonLite". My only question would be an impact on the lens end--it appears that the lexan extends to the edges of the body, but that may just be my perception of the photos.

The AA MiniMagLite was explicitly designed to be used as a Kubotan when necessary, both as impact and pressure/pain compliance tool. I have the manual written for its use squirrelled away somewhere.

Just emphasize that it’s a flashlight; that it can have auxiliary uses is just a bonus.

Nobody’s banned flashlights yet, anyway.

David