Hey Artana, I know that must have been tough, I try to keep an open mind when folks suggest these various things to me, and I know that ds is not without issues. Good point about being in a new situation and how that can make a diagnosis make more sense.
I have read that good assessors looking to distinguish between 1 and 2e will work with a child on assessing giftedness when they are well rested, relaxed, etc. and work on assessing for any learning or other issues when a child is more tired, less comfortable. These 'tricky' gifted kids can really compensate sometimes for a lot of things until they are a bit out of their element, from what I have heard.