I don't know how to test it so I am asking you guys. And what about basic smokes? Can you defuse the spike if it is smoked and you are outside the smoke but in range to defuse it? If its possible you could place the cove in a way that enemy would think that you are defusing sitting inside and when he enters the Cove he sees the spike that is being defused but does't see you inside the Cove so that would give you an extra second to defuse.