My U2 went to work with me right after I bought it. The various levels (yeah, I actually used more than high and low) allowed the perfect amount of light for the job, as I used it in varied ambient lighting conditions. The wider beam of the Lux V was better suited for the close up nature of the work.
It's been dropped on indoor floors, but not from more than lap height while sitting on the floor. Some were concrete, and it does have some scarring along the bezel ring.
It's actually dinged me better than I dinged it. I came home in the rain one day, and my cat was on the porch. He's a leg cat, in that he walks right under foot, and bumps and rubs on the shins. I was going up the stairs and he got under foot. Reacted so as not to step on him. Not being able to get the foot fully on the stair, I began falling backward. Not wanting to slam my useless head on the sidewalk, I turned sideways and fell on to the right hip (also used the right hand to try and break the fall). Hard. U2 was in a Ripoffs holster, and the first thing I did was pull out the light and see if it works. Then I holstered it and checked myself for damage. This was all while laying in a rain.
It left a U2 shaped bruise on my right hip. The bruise was blacker than the HA on the light by the next day, though it quite hurting soon after, it stayed a long while. Makes me wonder if any flashaholic ever had a life size tattoo of their favorite light done? Mine was unintentional!
I continued to carry it everyday for a quite a while, but the lonely Gladius convinced me to holster it instead, and I've now carried it longer than the U2 was carried, though I don't have the same work needs. The U2 does house duty now.