I've been looking through a few texts, to see if I can identify where I've got some of my cranky ideas from, and have been re-reading David Turner's A Passion for Tango. He was a refugee from the BR world, but took little or nothing with him when he switched, and the book is full of little digs at BR (the zeal of a convert getting the better of him, mainly). One thing he didn't abandon, though, was the concept of a frame, and writes at some length on the topic in Ch. 5 of his book.
In Ch. 4 he writes, briefly, about the carriage of the body's weight, and quite unambiguously writes about the use of the toes, rather than just the ball of the foot to maintain balance, for both leaders and followers. He cites a pretty impressive list of teachers, and if he is wrong in that basic aspect of posture, I feel sure one of them might have mentioned it to him. So, there are at least three of us: him, me and Christine Denniston, who carry our weight very forward. I've always carried my own weight well forward, anyway: I am a BR dancer, and it goes with the proper posture, so the adjustment to AT was just for more of the same. YMMV.
I very rarely annotate books, but my copy of Turner's tome is actually full of little notes, because in almost everything he says, when making a comparison between BR technique and AT technique, he is just plain wrong in what he says about BR technique. In that tendency, he shares a great deal with the AT community. I wonder how/where they get such funny ideas: is it from watching TV programmes like Dancing with the Stars/Strictly Come Dancing, or the extremes of some high-level competitive dancesport, for if so, the fairest comparison would be with Tango Fantasia, as being representative (and a point of reference) for good AT technique.