"Yeah, we've never had trouble with summoning locally for angels and fairies. I'm thinking the war's going to be mostly demon-aided, though."

"How long do you think the war's going to take?"

"I honestly have no idea. It might be that we land, pull a ten billion person evacuation under fire and successfully get half of them out before he gets bored and wrecks the planet, it might be he'll offer us terms, it might be he's constrained some odd way and the war actually involves extended firing of projectiles at each other - it might be we leap to the system and it's already too late..."

"Insofar as demons have currency, information's it. Humans can use the light leaper ships well enough that that, I'll give away, but I can do that meaninfully until the next Fairyland Concordance at the soonest, because where we're from, people gag demons."

"So I can keep pulling demons from your world for a little while and hope the local tech level's still new and exciting.  Or, once we're away from the Valar, be otherwise less constrained in what to offer them, I suppose."

"And, you know, it's interesting here. And the more time I spend not in Hell the less use I have for spending information."

"Care to stick around and keep summoning things for our war?"

"Probably. I mean, I am the easiest-to-pay demon ever. I'll want to investigate the available evidence more first, but--probably."

"Yep. You have another feature, now, for as long as you keep the chips in - try to say "I swear my name is Elda" or something."

...

"Why can't I do that."

"You can't swear falsely. You can take out the chip and then you can, again, of course, if it bothers you. You can use it to do lots of things, many of which you would not want to do - swearing to hate someone will make you hate them, for example, forever for we Elves and until you take it out for daeva. Wise people only use them to confirm honesty and trustworthiness and those nice things."

"...Thank you for telling me that before I naively promised something."

"Sorry, I suppose it makes sense that in a world where they're not enforced people'd make promises expecting to break them. If you want to be able to do that you'll have to take the chip back out. Anyway, I swear that everything I've told you is true to the best of my knowledge."

"I don't make promises I don't mean. That doesn't mean I would have liked to be surprised by having one enforced."

"Your promises are now enforced. No one's going to treat you as reliable on that basis, though, since you can disable the chip. You can't disable ours without killing us, so our promises are very reliable."

"Noted."

"I'd say 'you're welcome to walk around and talk to people' but, well, you aren't. You can pull up anything you'd like, though."

"Yeah. Pity about the twenty-five meters thing."

"Ordinarily I'd say you could go meet the Valar and argue it but I can't be spared from here."

"No, it's fine." She conjures a book.

The day before their departure the Valar announce they are temporarily closing all shuttleports and prohibiting summonings. 

To stop anyone from doing anything rash or unwise in light of recent events. 

"I apologize on behalf of my...whatever daeva are, I don't think we actually qualify as a species."

"It's fine. We're leaving; should I dismiss you first?"

"I don't particularly prefer it."

"Okay. Shuttleport's closed so we're launching from a field nearby - they're going to be angry, I'm just not sure how angry, or how fast they'll realize -" he starts walking.