Just got my Tasklight today, and after playing with it I've decided there isn't a need for an additional tailcap clickie. Unlike the Twintask's 4 position switch which left me fumbling with the button, this 3 position switch makes sense. I know it will always come on full, followed by low and off. I never liked having two off positions which is what caused confusion.
The simple field test I gave the Tasklight 2L (TL) was against the Twintask 2L (TT) and Streamlight Scorpion. First of all, the throw that was lacking in the TT isn't a problem with the TL. It rivals the Scorpion's throw except that the Scorpion (with a yellowish tint) has a little better color resolution. The TL's low setting still has decent throw and spill and should be fine for seeing what's around your immediate area. I would say the throw on high is good to make this model a duty light, which is what I tried using the Twintask for until I concluded the output wasn't sufficient and the switch was a nuisance. Also improved is a matte black finish over the gloss black of the Twintask. I had to get a new Ripoffs CO-181 case as the TL is about an inch longer then the TT, but aside from that the size difference isn't going to be a problem for me.
I almost purchased the Inova T3 to replace my TT; and I would have if only it had a low power setting. For me this TL is the closest thing to what I want that's currently available. After 10+ years of using rechargables (Streamlight SL20, Stinger, PolyStinger), I've decided to go with cheap-if-ordered-in-bulk 123 lithium batteries. I can carry spares in the field and never have to deal with recharging or the battery going flat after sitting for a month.