What happens if you use it on a div wrapping the app route?

If that works, This sounds like something that a type 3 component might be needed for

*root

Are multi-arity functions allowed/idiomatic in Reagent?

don't see a reason not to use multiple arities

usually I recommend the pattern (defn my-comp [{:keys [a b c] :as props} & children])

because it matches non-reagent React components

but I think that's a matter of style mainly

well, if you use (r/props this) it kind of expects that pattern too right?

yes

although I don't see a need to use r/props in the render method

and you can just use r/argv instead of r/props to access everything

Yeah, I don’t use it there, but sometimes I need it in did-update

yeah I agree it's annoying there