Slapping a template on a Shrieker is like slapping a template on a Flumph.
The major problem with the 'Dildos for giants' approach is that they scream, so all your neighbors know what you're doing. Especially when the shrieking fades in and out. (I'm going to Hell for that line there.)
The hilarious part of Awakening them is if, once awakened, they stop screaming and hold intellectual conversations.
<A. Shrieker> I do say, ole' chap. There are some rather vicious monsters about, and if you keep going, I dare say that things could end up rather gruesome. You could turn back, or perhaps some coin may convince me not to summon the local dungeon inhabitants... if you catch my drift?