There really isn't any reason to tame an ovis. You can shear them while they're wild. I keep some in a pen by my base and when I go tame something pick one up on my argie and bring it with me
You should use Ovis for a mutton farm because mutton is like a less effective type of kibble. Most dinos Love mutton so this is a very useful way to use these!
If you wanna get wool without having to get ovis by just geting vegie cake make a cage with dino gate then get a argy to transport it into the cage then just simply shear it with scissors.