I know it's been over 4 years, but thought I'd put in my $.02.
So starting from the bottom left, I have a Hugsby XP-1 (probably a knock-off) with the pocket clip reversed. My normal work attire is a collared polo shirt and cargo pants. When I'm wearing collared shirts, I have it clipped to the placket of my shirt. If no collar, it's just clipped to the neck of my tee-shirt. Sometimes, I use a Tank007 E09 instead. Both use NiMH AAA. This is pretty much always on my person. It's purpose in life is to help me find it's big brothers and avoid legos in the dark. BTW, I find that if I have it clipped to my shirt, aimed below my chin, the reflection from my neck provides decent light for walking in the dark and my chin blocks the light from directly hitting my eyes.
Next to that is my Leatherman pouch which also holds my Inova XS (also AAA). On my right hip, strung through my belt. If I'm not wearing a belt (rarely), then it goes in the fanny pack.
I alternate between the Convoy BD-03 and ThruNite TN20 for my left carry. It's either clipped to the belt on my left hip or in my left pocket, clipped. At the end of my lanyard, I add a quick disconnect and usually a split ring. The split ring is attached to a carabiner or snap link on my belt. Used to attach it to my belt loop, but those started getting beat up so I added the snap link onto the belt. I use the lanyard as a safety leash for my light and use the quick release for, well quick release. This way, I'm less likely to lose the light if it happens to come out of my pocket, but I can still quickly deploy the light.
I keep the 501b in my right cargo pants pocket. It's kind of a give-away in case someone else needs to borrow a light but I also carry it because it throws a lot better than the tubes on my left.
In the upper right corner are examples of the quick releases. I got them on eBay, 50 for around $6. I also use them for leashes for my phone and EDC knives. Keeps things from hitting the pavement.
On top is an Inova X1. I loop the lanyard onto the right side of my belt (pins my leatherman into place) and the light is clipped in the right pocket. I keep it around because it's AA powered so easy to find power sources for it and foolproof UI. The lanyard is from an old USB flashdrive and has a quick release and can also go around my neck. Also, I found a clip from my old AA Minimag which fits pretty nicely on the X1. I like having it reversed.
Below it, I have a Klarus AR10, which I leave in my fanny pack. Basically it's a ThruNite TN20 with a USB charge port. Also, I have an SK68 with a UV emitter that also is at home in my pack. Pack also has anywhere from 4-8 spare charged 18650's in a poly-carb o-ring sealed water-tight box, lined with foam to prevent banging around. When the Olight's come in, I'll have a few 16340's added to the box. I don't typically carry spare AA or AAA's because I can generally always find one if needed, and I always have charged NiMH in pretty close proximity.
I have a few Olight S1's and S10R II's on order. Based on the reviews I've seen, it looks like the S10R has a tighter beam. If it throws adequately, it might replace the 501b in the right cargo pocket.
I'm looking at ordering a utility vest to possibly migrate a lot of these items into, also possibly to replace the fanny pack, too.
I like single cell lights because that way I'm not SOL if I only have 1 cell. Most of my stuff is general duty as I have never had the NEED to light up something more than 150 yards away. Where I live, there are very few street lights and it is pretty dark at night.
Mahalo