So: scenario 1, you put the spare batteries in a drawer. You take them out of the drawer and put them in your camera vest pocket. You take them out of the pocket at the end of the day/trip and put them back in the drawer. On the next trip you take the batteries out of the drawer and put them in your camera bag, then back into the drawer at the end of the shoot. As I said before, yeah, right. I take pictures rather than keep track of batteries.
Scenario 2: yes if you don't mind losing your meter. What's 'carrying smart'? My wife carries 2 cameras; I carry 2; you want to fight over batteries? Again, we'd rather take pictures.
Scenario 3: you buy in a less than ideal location because you've just used your one spare set and don't want to be caught without another spare set. If you live out in the mofussil, never mind being on a long trip, silver oxide batteries aren't easy to find.
Scenario 4: No, instead of carrying a dozen spare batteries, carry cameras that are not battery-dependent. You almost certainly won't lose your meter, and if you do, it's not the end of the world. Lose your camera: that's another matter.
If you are the kind of person who ALWAYS carries spare batteries and ALWAYS knows where they are, I salute you. But I am human and fallible -- again, to borrow your phrase, hardly a copyrighted concept -- and I suspect I'm not the only one who is that way on the forum.
You say in your post that you'd have thought that you might carry lots of spares when you're on a long shooting trip. Well, so you might think, if you were infallible; had unlimited time and space; and had never actually done it. But there are lots of things to think about when you are planning a long trip, and lots of things to forget, and lots of things to lose in a crevice in a bag, and (for example) not much space when you are travelling 4000 km on a motorcycle. Not having to worry about batteries is one less thing to have to worry about. This isn't just what I think -- it's what I know from decades of travelling on three continents. If batteries were the most important thing I'd ever forgotten, I wouldn't worry.
So I'm sorry, but I disagree completely. It's not trivial. I know other professionals who have shot with all-mechanical cameras when their batteries have died, including 'fresh' batteries out of the pack.
Fortunately, you don't have to do it my way, and I don't have to do it your way. We can let anyone who reads our opposing viewpoints decide which of us they more resemble, and which way they want to do it.
Cheers,
Roger (
www.rogerandfrances.com)