The Truvative Gigapipe SL is ISIS: http://www.pricepoint.com/detail/15544-030_TRUSL6-3-Parts-48-Bottom-Brackets/Truvativ-Giga-Pipe-Team-SL-Bottom-Bracket-'07.htm

I'm pretty sure the Gigapipe line is all ISIS.

The phrase "is a massive heat treated CroMoly spindle" is tech talk from a marketing person.