The one advantage that my system has is that it's a little more like Colemak than Dvorak—to drop the metaphor, my system basically takes a standard line of plain text and does a lot of character substitution. So not only is any line of my system's (got to think of a better name) text non-lossy with a single unambiguous line of Roman alphabet text, but you can basically learn it as you go: writing everything down normally and replacing characters and clusters as you learn those new glyphs. You don't have to start from scratch like in Dvorak, or like in all those nutty swoopy shorthand systems of yore.