Huw, are these the ones you have?:
[img]http://www.totalcycling.com/productimages/fullsize/itm_lite_luxe_wing.jpg[/img]
They seem to be some of the few on which the drops extend towards the back. They are announced at 170mm drop although side to side they seemed much more shallow than mine (which I find too deep) which are announced at 165mm (seems more like 180m by measuring).
Is drop one of those measurements which criterias vary from brand to brand (center to center, etc)? Take for instance these Ritcheys, announced at 145mm - they look quite deep:
[img]http://ritcheylogic.com/web/Ritchey~Logic/Ritchey~Site/web/assets/Products/Road/Bars/WCS~Carbon~Streem/007WCSCarbonStreemLarge2.jpg[/img]
Also the flat top section on the ITM doesn't go all the way to the sides like on my current bars, which I the one thing I like about them - this allows to rest your palms while gripping the hoods with the end of your fingers, which I use a fair bit, for climbing for instance:
[img]http://hyperbolts.com/catalog/images/TK973_big.jpg[/img]