Hi there. I have had a VBAC, but I wasn't induced, so the info I know is from research I done when pregnant.
Drug induction isn't used very often as induction can cause a much more intense labour which then puts extra strain on the scars from your previous section, which in turn raises the risk of uterine rupture.
Some hospitals won't induce a VBAC and some will. I guess each hospital and each Ob's have a different approach.
One of the risks of vbac is uterine rupture and one of the warning signs of uterine rupture is scar pain. So, if you have an epidural you will not feel scar pain if there is any.
Sweeps only work when your bosy is ready to go into labour, so are a bit of a moot point. However current research shows that 3 sweeps on consecutive days are the most effective.
Most hospitals use a horrible phrase for VBAC'ers which is 'trial of labour'. In a (crude) nutshell this means your labour has to fall inside strict guidelines, ie your cervix must dilate one cm per hour etc. In their eyes everying has to go to plan and must be done in a certain amount of time. Epidurals can slow labour down, which isn't really want you want when you have to labour against the clock.
This all sounds really negative, but please don't think it has to be that way.