When seated/tripod mounted. What mag are you picking up animals most of the time with?
Please exclude handheld use - I would like to focus on dedicated stationary glassing.
By far most of my Wyoming deer are seen first with 10x binoculars. It can depend on how someone glasses. I scan in increments with binoculars rested on the spotter turned sideways at a “normal” speed, then repeat it “slowly”. If nothing pops up the spotter is used in the same way - once “normal” speed increments and once “slow.” Scanning twice seems duplicative, but the level of detail seen picking things apart slowly is different. “Normal” speed my brain is looking for deer, horizontal backs, legs, or antlers and the speed allows my brain to process that level of detail. The slow scan really picks the area apart looking for those things as well as smaller parts like ears, eye balls, noses, tails, elbows (I guess those are called elbows), patches of hair, etc. Then I go back to the binoculars, rinse and repeat.
If what I’m glassing is closer in, like a sitting within rifle shot of a big patch of Krumholtz I tend to switch between binos and the spotter quicker so to not get caught picking apart pinecones with the scope when a buck stands up and tries to sneak off.
Likewise if the area in question is all at long distance binoculars may not be used at all, but typically I’m only glassing areas that can be hunted right now, and ignoring the far side of big drainages or distant ridges requiring a 4 mile trek to get to.
Some of my friends scan with bare eyes then go straight to the spotter. They tend to be the guys that don’t enjoy glassing with binos.
Antelope hunting or sagebrush elk, I can’t recall a situation where they weren’t spotted with binoculars first.