We also use Sage and AM, and have a web based jobsheet and acceptance of quotes system, we are currently working on the quotes now. We should be able to write the spec as we walk around the property and at the end of it produce a full written specification with price that can be instantly emailed to the customer. The only problem I can foresee after some of the tests we have carried out is trying to quote several disciplines at the same time, as it would require switching between urls on the ipad. We looked and trailed AMs jobsheet but it was too unreliable for us, I have heard that its got better though so may be worth taking a look.