it is more complex though, and complexity exposes greater numbers of failure modes.

out in space, a device that depends on electrical induced tension in a material will be very vulnerable to a sudden burst of RF energy. shielding the critical parts of a conventional space suit is much easier, and the weight, i mean, come on. in zero gravity the weight of the suit doesn't matter much if it doesn't weigh more than the weight of the astronaut. it just impacts the energy required to change momentum.

i can see this type of electro-tension material being useful for robots, tho, but for space suits i'd say it's too many ways to go wrong.