While I don't plan on soloing ambuscade often, my view on it is likely gonna end up being "If others don't want to invite me to theirs, or join me when I go to do it, they get to deal with someone soloing it", as I have no intention of waiting for hours for a group at this stage of FFXIs life if one is not needed to do something, as I would much rather be playing the jobs I enjoy, instead of forced on to the current popular stuff as much as possible.
I checked the sparks gear, and actually had enough to get enough for all 3 of my old 99's (blu, drg and sch) so at least I'll have some variety to mess with on the higher stuff.