I have don't have big problems with the carb flooding out, i have gone up some pretty steep hills and it starts to glug a bit, but never flooded out. The carb can handle a fair amount before it starts to die.
You can always flip the carb 180 degrees, or get a side draft carb.
As for the FI sami, i have seen them a couple of times. Never seen one in action and i have never seen one for sale, but i could be looking in all the wrong places.
Amilla