I've had this umbrella for a month now and have really enjoyed it.  While I would not attempt to take it through airport security due to its weapon-like appearance, I do carry it everyday.  It definitely garners its share of looks.  The handle feels very comfortable in hand and the length of the handle means both hands can easily be used to wield the umbrella when encountering strong winds or water-gun wielding ninjas.  The material and mechanism of the umbrella are good quality and it opens smoothly with a single click of a button.

The nylon "sheath" is also very practical due to the extra-long, adjustable strap.  It allows one to wear it across the back or over the shoulder -- a hands-freeing feature that very few other umbrellas have.  The sheath is also where my only complaint comes from.  The umbrella is significantly heavier on the handle end which pulls the handle end down.  Unless worn across the back or balanced by a hand, the handle end will want to dip down and the umbrella can accidentally slide out.  While mildly bothersome, I find it an acceptable trade-off for the easy draw action the sheaf affords.

PROS:
++Unique, distinctive appearance
++Good quality
++Extra long handle
++Easy draw, adjustable "sheath"/cover

CONS:
--Handle end wants to slide down in certain cases when worn in sheath and not steadied

I would highly recommend this for those who would enjoy a unique take on a ubiquitous item.