So far, at twelve weeks, my eleven runners are little sweethearts. About five of them are a bit shy, probably always will be. The other six call for me, come over to visit me, nibble my shoes and trousers and so forth. All of them are very cooperative and easy to herd. When there is the occasional breakout of the temporary fence area (I am with them when they are in that fence, so I see the breakouts immediately - actually, they are usually a result of the runners wanting to be closer to me), I fairly easily can get them back in the pen by herding or they will let me pick them up, one by one, and place them back inside the fence.
They went through a very skittish stage from three to five weeks, but we seem to have worked through that.