The binding + Axe lifter is 28mm in the rear, the front is slightly less. I think the Axe+ is 10mm so the binding is 18mm.
DONDA, I could stack this on the Driver (9mm). Like you say, the Driver is fastened directly to the ski, then the binding + Axe lifter is only screwed into the Driver. If I found this to be too much lift, I can just get shorter binding screws and remove the Axe without any drilling.
You ask a good question about terrain. I plan to use this as my all mountain ski, some bumps, crud, etc, and hopefully race gs as well. I concentrate on slalom and use a dedicated ski for that. I thought the extra lift would help the turning on ice, but would not want ruin its off groomed performance. I look at mag photos and it appears they are really stacking 'em the fatter skis too.