I've tried to egg carton thing...you've got to cut away a lot of the carton to preserve air flow...and you're correct, you can miss low pips. I found it to be too restrictive, thinks they need to be able to roll the egg a bit to get out sometimes.
I have to agree with laying them down. For those reasons, plus i think laying down is more like under a broody (although i do prefer upright thru incubation)
Scott, those silkies are gorgeous! Hope yours grow out like them!
