i'm considering buying the l2d. does it feel bulky in the pocket? i'm thinking of either getting the l2d or the smaller p2d but i like the longer run times of the l2d.
For pocket carry, the L2D is kind of a stretch, but actually, you shouldn't have any problems finding it. The hard HA-III scratch-resistant aluminum won't pick up a lot of nicks and dings, but the light comes with an excellent holster. You might also want to buy a P2D/P3D and use rechargeable CR123A cells. The lithium 123As sell for about a buck apiece over the Internet and have an incredible 10-year shelf life, making them great for emergencies.
Why have a flashlight and a knife? One night, after my car battery kept failing, I finally got some distilled water to fill it up. It was night and I had a couple of hour drive in front of me, so I popped the hood, turned on my handy, dandy flashlight, set it down on the radiator and used an enema tube to fill the battery reservoirs. My knife came in handy for prying off the plastic tops; it also scraped off some crud around the connectors. I could see clearly enough to see the "crinkle" in the reservoirs, and, when finished, I did a jump start and spent the next couple of hours recharging my battery.
Have you ever need to read a road map in a darkened cabin of your car when the overhead light was out? How about find your registration when you're pulled over? Ever changed a car tire at night and wished you had a flashlight with a strobe, so some bozo didn't clip you on the side? Fenix also sells a red filter that can be placed on their lights (and others). These keep your night vision at optimum levels and, when used with the light's strobe feature, doesn't blind oncoming traffic. Flashlights come in handy for a great many things. You can check a car tire for punctures in low light situations if you have a flat, you can use them when walking along dark 2-lane roads and you can use them to momentarily stun an opponent long enough to skedaddle or retrieve that nice Spyderco Military you have clipped to your belt.
The cheap little $15 light is not a Fenix. They may look alike, but the HA-III finish on the Fenix is far superior to the Romisen RC-C3's. The C3 also has only one mode, but it's bright enough for many uses and makes a great backup. Some folks don't like strobes, but I find them useful for lengthening runtimes in an emergency and, well, it's just kind of cool. Oh, and the C3, while it may take some heavy rain, won't likely take a dunking. The Fenix can. But that's why it costs more.
Regarding Surefire: I have a few G2s I've upgraded and I love Surefire, but there are so many decent lights on the market today such as Fenix, Nitecore, Jet-Beam and others that all of them are terrific. I even got a cheap brand called Spiderfire that's built like a brick outhouse and twice as bright. Surefire remains a bit pricey for my taste, but it's a great light. Inovas are wonderfully built, but they manage to stay behind the technology curve.
TWINBLADE: Your holster is fabulous.
The C3 is not a Fenix (see photo below), but it's
still a great price.
The red filter is great for maintaining night vision, as well as
blinking to oncoming traffic if changing a tire or walking at night.
Even if stranded by the side of the road with your emergency
lights blinking, a backup warning system might be desirable. 
