Don’t know how to quote yet but this is the post I was replying to:
So, I still think they’re great, but use them differently now. For example, a sheet can double as a heavy with a 400g liner added. You are rarely going be switching between those in a week. Then you have a separate medium - since you may need to alternate sheet/medium or medium/heavy on alternating days. It saves you many, many, changes of liner - but lets you get double-duty out of the shell.
This is what I do. Each horse has 2 rain sheets and 2 medium weight turnouts. Once it gets cold enough, their heavy weight liners (400 or 450g) get attached to one of the rain sheets and stay that way unless we get a really warm and wet week. In a pinch if the temps are swinging around a bunch, 2 mediums is more or less equal to one heavy weight. So lots of layering options with this set up. My horses are all fully clipped and 2 of the 3 live outside full time. One of them runs super hot and doesn’t get the medium til the low 30s and doesn’t get the heavy until colder than that.