It should be noted that water runs down - Gravity?. Therefore placing the utensils facing up has the dirty water running off the handle leaving the cutting eating part of the utensil cleanest. Like washing your car, you start from the top and work your way down.
As far as touching to put away, wash your hands :)
They have great hygiene. So genius, when they reach down to get those knives that are sticking blade up and cut themselves and bleed on the dishes and floor and have to go to the hospital because you want gravity to work for you in your dishwasher will you be happy?
I like things to be uniform. So if they are all up they are all up. If they are all down I like them all down. I also like to put all the forks into one section and knives in another and spoons in their own as well for ease of having them pre-organized so when I go to put them away it is just grab the bunch and put in cutlery drawer in a bunch.
Of course, I assumed you would group your utensils. This is a given. We have fixed the safety issue (btw, make your young kids unload the dishwasher? C'mon - only a kid once. Do you love your kids?). So use gravity... can't beat gravity it wins every time and be safe. Perfect solution. Most will be up as there are less sharp knives so I win by majority of down vs up.