I know this thread isn't new but for anyone here still looking, I'd recommend one of the switchblade lights from streamlight. they have two versions one based on the stinger battery and a smaller one based on the strion battery. both have a UV LED in them which is a nice high quality UV LED. Nice strong UV emittance without overpowering visible light. it's not filtered but it's not bad. Also you get two different CRI's of light on the work light part. One is supposed to be some sort of true color LEDs to match sunlight I guess?
battery life is pretty good, it's not amazing, but if you get the smaller strion based one then you can swap out the battery quickly and easily. (the stinger based one requires you to remove a screw to get the battery out) I've been using them for years and well my second one only because somebody stole the first one.