Yeah, if the technology doesn't take off, its a good thing to have. Obviously 500 lms and two and a half kms makes for an extremely focussed beam with little or no spill. I also have a K75 and its an absolute beast, BUT, its certainly not as handy, size wise, as the W30. I reckon as far as a fox or rabbit goes, you'd stop 'em dead in their tracks with that light. The one thing I see with LEP, and its early days for the tech, is that they may not make a good mid/flood beam, with the lumens they put out. Who knows down the track a bit though. A very interesting torch to own and use.
Beam throw does expand with distance but you need binoculars to see what it lights up..some smart arse the other night decided to keep me lit up with their LED while i walked the dogs. From now on this light goes on dog walks along with the SLN