I gather that rooing is something you do when the ewe starts to shed but not completely and it's to make her tidy?
Anyhow, I know there are certain breeds that do this, so in theory, no need of shearing.
In the past, when I have had Shetlands, some, by the time the shearer came, all he did was tart them up as they'd already lost the bulk of their fleeces. Of course, me being thick, DIDN'T realise this was a good trait and if I had been psychic, a line I should have kept to keep down shearing costs.
So, my question, is apart from Wiltshire Horn (natural shedders) do any of you with Shetlands, Hebrideans etc, that have these "raggity" sheep, USE this trait to your advantage and breed those lines or are they just flukes of nature?