I have just had a CVS on wednesday which confirms my baby has Downs (We had been given a 1 in 11 chance)
If by any chance I have another baby, my thoughts are that I would ask to have a CVS earlier (I believe they can do them from 10 weeks) rather than wait. I was also worried about the chance of miscarraige fromthe CVS but think that the stress that I have have been through wouldn't help the baby either so earlier would mean less stress.

I too am surprised they can't test at the CVS if they can test embryo's, isn't that basically what a CVS is testing the placenta which is as close to the embryo it can get.