Thanks again for all the input. My flashlights arrived [L0D AAAx1 with Rebel LED, in natural; L1D AAx1 with Rebel LED, in black; spare L2D body tube; L2D belt holster; white diffuser cap; and red lens filter] and I'd like to share a few unscientific impressions:

Overall fit, finish and construction quality are excellent. They both 1ook and feel well-made. Aesthetically, I personally prefer the "natural" over the black finish. Needless to say, both are very bright. This makes the multiple dimming options nearly essential. The rapid strobe is a real attention-getter, but the gimmicky SOS mode flashes so slowly as to be unrecognizable.

Fenix holsters are an open top, cordura-type with elastic side panels and a closed slide-on belt loop of about 2" or so. I'd prefer a closing flap, but I have to admit they do retain the flashlight very well, at least with new elastic.

The diffuser works well to make the flashlight a reading or small-area light. The red filter fits well and doesn't dim the light much, which is a good thing.

Jeff