We already have our agents on the way to help us once we manage to manifest them outside our world, and we can already deploy an Aleph without massive collateral damages: Us.
And our fight with NT doesn't make me completely sure that deploying the Claw would not actually lead to big collaterals, NT is a purely physical Aleph, and look at what happened when they stopped holding back, no reasons to think the Claw would ends up different, in particular, can you imagine what would result of them deploying the rabbit serum in a city? You could certainly follow them through the holes they would leave in all the buildings they would leave on their way, and they would potentially splash all the bystanders that would just so happen to be too close.