I still have both my Streamlight Scorpion and NF-2 incans from patrol work. I've converted the NF-2 to take RCR123's now so that's in my daily rotation. Just couldn't find it in me to get rid of any of those, minus the fact that they would resell for less than half of retail now since everyone's in the hype of LED's. The Scorpion sits in my field bag, and then I still have two brand new Pelican SabreLites, minus the third one which now sits as an empty host from so much usage and going through 2 lamp modules. Reason I still have all those is from real world experience. In a life and death situation I'd rather have the true color rendering of the incans to light any persons that may be within yards of me that could cause me harm. Cool tinted led's just doesn't outline any persons or animals like warm tinted incans do. Also my SabreLites just pierce through the fog or smoke all that much better. I guess that's why I haven't given into the idea of an led weapon mounted light. Still have my old trustworthy Steamlight M3X also on my XD-40.
The extra cost for primary batteries to power these juice sucking incans just doesn't outweigh my life, still now and especially then. All in all I have roughly a 1:1 ratio of incans to led's, and half my led's are neutral or HCRI led's.