Yeah, if you're using clonidine at sleep-effective doses short term, you're not getting withdrawal, either.
I still think it's outrageous you initially acted like librium doesn't have a withdrawal. Obviously if you take it in the lowest effective dose and only very short term, you won't have problems (assuming you don't decide to abuse the med). That's the same with, wait for it... every benzo that exists. Librium is not special. If you take it for a long time and/or at higher doses, you're still gonna have to taper to avoid withdrawals.