fish - Is swordfish Kosher?

What's the deal with swordfish? Is it Kosher? Which sources say yes, and which sources say no?

EDIT: I know that R' Dr. Moshe D. Tendler is well known for having consulted with scientists (in 1951) and deciding that they are not, based on the way their scales look, cling to the body and disappear later in life. However, according to this article the Chief Rabbinate in Israel rejects that theory. Also, the Conservative movement considers them to be Kosher, based on a Gemara that supposedly says they are. I am not Conservative, and I don't follow Conservative rulings. However, I mention that ruling because it seems that, according to the above linked article, Jews along the Mediterranean have eaten swordfish for some 350 years, and that the Gemara in question is translated as swordfish, but it may not be what we today call swordfish.

So, with all that background, are there any Gedolim today who hold that it is Kosher, and how do they support their position vis a vis R' Tendler and the problem with the scales?

Answer

Rabbi Hershel Schachter quotes Rabbi Joseph B. Soloveitchik (Divrei HaRav p. 192) as having been shown a swordfish and permitting it, claiming that there aren't any rules that mandate what the scales should look like.

He further notes some historical precedent for eating swordfish in Europe (my impression is there is some disagreement about what fish is specified in the records).

Finally, I have been told by students of Rabbi Schachter that he thinks swordfish is kosher and has even eaten it on occasion.