That's usually called a "classical" incision - they do usually mean that any future babe will need to be born by casear as there is a higher risk of uterine rupture with a vbac than a lower transverse incision (the one they commonly use now).

Before going down that path, you could think about getting a second opinion. If it's the only way then...nothing lost. But if it's not, it's worth finding out.

All the best.