On the other hand there is a Non-ritual spell in MoH that functions as a duration concentration spell container(p113) . Turns out that it's Ranuf who knows it.
I could sidestep the entire ward issue by instead of making a new ward spell make a lesser enchanted device to cast maintain the demanding spell on Ranulf's patient spell which in turn is holding a copy of skin/hide of wax.
I'm not convinced that Hermetic magic shouldn't be able to do non-ritual wards in fact the core books says, implicitly, that it can. I'd mark down the restriction in Rival magic as a goof similar to the magic realm aligned spells misstep with one exception, that exception is that being able to que up an arbitrarily large number of spells to go off at a given time is a bit too powerful an effect for it's level. It might be that the author of Rival magic wanted to make a change in the rules rather than was oblivious to what was in the core book.
Is Chris Romer on this board at all? I'd be interested in hearing what his goal was. ( I remember starting a topic on this very subject when Rival magic came out [url]https://forum.atlas-games.com/t/binding-a-watching-ward-effect/5315/1] but it never really got that far).
let's see about a rego vim item for Ranulf
shape /material 0
that's 60 so he could get a level 30 effect
Maintain the demanding spell at level 20 +5 levels item maintains concentration + 5 levels 24 uses per day, that's doable as a lesser enchanted device.
There are now two new questions, namely if Artisano can target a spell cast by someone else as it is released and if the item can maintain concentration on 20 + spells at a time.