Actually Travis.. I would rarely disagree with you.. but I've had/had anacharis in an excel tank and now in an excel supplemented tank.
It not only grows fine, but it takes on a prettier form in my tank... I am assuming it is an emersed vs submersed thing.. but it becomes a finer stemmed /leafed plant.. sort of like a new shoot, but the shoots stay that way.
and they are very healthy.
I hate the thick form of anacharis, but this stuff is so pretty I don't have the heart to toss it even tho I really don't have room : )