Well, like I said, you could still use it to protect yourself. So (even though I doubt this situation will ever come up for me) I don't think I'll use this mod.

You enter concealment successfully, but since you're on a detection tile you can't move without losing concealment, and without my other mod destroying the tower won't change anything so you've effectively wasted Conceal.

So what happens if you don't have this mod and try to use Conceal in the detection radius? Does it immediately un-conceal? Does it un-conceal as soon as you take another action? Or does it let you just stroll right out of the radius undetected?
If the second case is the correct one, it could still be useful to Conceal in that situation to avoid being targeted by enemy fire for a turn.

Yes, they won't be able to activate Conceal.

So what you're saying is that if a solider's in the detection range of one of the unhacked towers, concealment isn't possible?