Went to Auto Alpina yesterday afternoon to check it out. Yes, the bike is high, but as soon as I lifted it off its side stand it already lowered a bit. I swung a leg and was promptly able to half-foot both sides, then the salesman points out that the bubble should be in the middle. I go on tip-toes both sides and the bubble levels out.
So, I'll be able to ride it on tar even with the standard seat! When I stop at a traffic light it's always neutral, flat-foot on the left with the right on the peg and back brake. I'll definitely be able to do this on the Xchallenge, and although off-road will surely be a little more difficult (especially in mud), I'm just going to learn how to make due.