I went to Shady Grove as well...the branch in Annapolis

I liked them there, very thorough.
If you have not been to your consultation yet, it might be a non-issue. Depending on your issues, they might not see a reason to go for genetic testing right away. They might run the "normal" tests (like the HSG, Mock-Embryo, Hormone levels, clotting issues, sperm samples) and go from there. If they get the answers they think they need, you might not have to do genetic testing at all. We did not have to proceed that far. My issue was found quickly (clotting) and we never did genetic testing.
We would have continued on for genetic testing if we had not found an issue with the normal tests. Chromosome abnormailites can be a cause of losses and I would want to know if there was something preventing us from concieving a chromosomally normal child. If the possible outcomes were compatible with life, we would at least know what to prepare for. If they were not, I feel it might take some of the blame and questions out of my miscarriages. Depending on the genetic issues, it could just be a waiting game to concieve a child, giving me patience and strength to keep going (like in the case of a mutated gene of a parent and needing to be passed the non-mutated copy). It could also open doors to medical intervention (like IVF series to shorten the time it could take to concieve a healthy child). I see it as a positive option...but one you *might* not have to address.
Good luck. Hope all goes well. We had lots of success shortly after being treated by them (see siggy!)