ok, just for fun, since I'm fed up with this one:
I challenge anybody to find pics or videos of shivans bouncing or running off/on the walls. watch the hall fight cutscene again, folks
. they sometimes grab the ceiling. period.
end of parenthesys.
as for the energy, I think V just didn't care, as much as there's no room for energy in a T800 or a T1000, or a nuke reactor in a battlemech, or any kind of engine in a tie fighter ( ion engine, yeah right, things as big as a TV? geeze, the Xwing is so ridiculous next to that then ).
as soon as consistancy goes, freespace is just loosy.