I use my Hi-Lift more than my bottle jack, but rarely on vehicles. I get very few flat tires anymore and the hi-lift is very versatile with light equipment and recovery (yeah I know it's a bit off-topic because I'm not on as many trails). I always carry a bottle jack and it's easy to carry my mounted hi-lift on my bumper. I carry a shovel, ax, Katana Boy, fold up bow saw, the winch is mounted, pistol, rifle, etc. Sometimes I'll definitely grab a chainsaw if I know there's stuff I have to cut.
Hi-lift is the last tool I try and I'm tense every second, but so often it's the only thing around that seems to work without crawling under a piece of equipment and jacking from beneath it. Floor jacks are great and I use them in the shop very often. I have a bottle jack with integrated jack stand that is my favorite to use if it'll work. When I'm able to fix one of our tractors with a front end loader, I'm really hoping this will lessen the use of the hi-lift.
I suggest you don't learn to use the jack when you're stuck and by yourself. You'll quickly find out how dangerous they are when you're on flat land in a controlled setting. If you're using it like a winch you'll learn there's a bunch of stuff you need and that handle is pretty scary. I have learned lessons when out in the field though. If you really want to be safe just watch others have fun.
This may be a tool for some to stay away from. I wouldn't ever see this around a job site, but they'll bring enough equipment/cranes that to rent for a day is more than my salary. I find there's 2 big issues with these jacks, the handle and the stability of the load. The handle is very prone with and without your input to flail on its own and it's not stable at all. It's more useful for equipment than a vehicle, but it's versatile.
In my truck I've started to carry a portable hydraulic kit and all of the above. I haven't used it for off-road type stuff, but I feel like there's a way to integrate some bases and adapters on the top have some versatility. Again this is more for equipment.
Always think about the range of the handle and where the load will fall and stay away from both areas. If you want to get rid of your jack for incredibly cheap, I could probably use 1 or 2 more.