Umm... There's a kludge you can do to get around this.

I know - that's how I do it at the moment. But apart from being very unreliable (and I got some rather nasty unlinear behaviour that led me to think presets were playing into it), it doesn't work very well if you occasionally need to turn the light on/off manually from the switch.

The really strange thing about the newer Marmitek stuff is that the manual for the LWM1 "mini-module" states "Two-way X-10: transmits the set dimmer level to other LWM1, LD11 and LW 11modules (set to the same HouseCode and UnitCode)." So somehow that would imply that the LW11 can track absolute dim settings.