Got the twelves, they are pretty sweet definitely doesn’t replace tripod glassing. But they are awesome when riding a utv and stop and glass, walking around, etc. they are pretty sweet when you have 15s on a tripod and come out of them and want to look at different areas without moving where the 15s are at.
I would say mine are going to replace like 8s for archery and when weight isn’t an issue while using a vehicle.
If I was backpacking and also taking a spotter I would probably stick with 10s on chest and tripod. To me they are another tool, not a replacement. Hope that helps.