As you can read. A little more info. would help. However, the following are my recommendations. YMMV.
Before finding my 5.11 Stryke pants. I wore Jeans. This is how I carried my lights.
You can see the top of a SF Fury (left side of the photo), and a HDS Rotary on the right.
After which, my HDS remained on my belt, and the SFs clipped easily in my right cargo pocket. Easily obtainable.
I carried a backup Fury, 6PX Pro, and a LX2. As well as rechargeable and primary batteries, pens, etc. in my briefcase.
I've owned single beam on-off lights. My preference was the low-high UI, all with a tail cap switch. I found the low-high UI was never a hindrance.
Lights with a similar build like the Fury and 6PX Pro are IMO, compact, and easy to carry. I will ad, aside from my HDS Rotary. All my lights has a pocket clip.
Another aside, from my LX2. If you should try a SF, e.g. 6PX type body. Check out Jason's clips @ Dark Sucks Promethius online store. Best clips IMO: oh well, it looks like his out of them.
TI Pocket Clips
Aside from my LX2, the 500 lumens in the Fury and 600 lumens in the 6PX Pro performed well, and was more than adequate.
If I needed more umph. I carried a light which was kept specifically in the Jeep for that purpose. Olight MX3 (?) it's presently in a box somewhere, and an aspheric lens ACE Beam.
BTW, my Furys were all first generation lights. One has a custom 18650 body (the lower light in the photo). Both lights has Jason's TI pocket clip.
Hope this help. Good luck!
BTW, the HDS is (one of) my EDC lights, so it's still carried on my belt.