I've heard that

[LadyAmanda]

Actually, i think a new dom could do a lot of harm to someone if they just waded in and started flaying away. If a new dom didn't know their sub, and couldn't tell the difference between 'good' pain and bad pain ... I shudder to think of the damage they could do, physically and mentally. If I was a sub, I would want an experienced dom, or at least one who sounded like they were willing to start very slow, and grow with me.

On the other hand, a nice new sub isn't as likely to judge the dom, or say (verbally or in body language) Hmmm, my last dom ...

So ,what we all need is partially trained dom/mes and subs
If you have an experienced sub, I think it could be a very rewarding relationship, because, after all, they do know their place!