Have you considered a Doula? Especially for a VBAC when you have Obs who all have their own conditions on VBACs. The rupture rate is so low... 0.7% - your scar is strong. Considering the risks of repeat c/s too, VBAC is very safe Here are some articles:

VBAC - On Whose Terms?
Men At Birth - Should Your Bloke Be There?
VBAC - What to Expect

I also recommend you check out the birthrites site which is great, and our recommended reading list. Particularly the VBAC books and Henci Goer's "The Thinking Woman's Guide to a Better Birth." For him, 'The Birth Partner" by Penny Simkin and for both of you, The Pink Kit There you go!!!

Its not about them letting you have a trial, its about you informing yourself and having the birth YOU want. There are Obs who will help you to achieve a VBAC.