SwiftUI Performance vs identity

In SwiftUI, it is recommended not to store ViewBuilder closures in sub-views but instead evaluate them directly in init and store the result (example: https://www.youtube.com/watch?v=yXAQTIKR8fk). That has the advantage, as I understand it, that the closure doesn't need to be re-evaluated on every layout pass.

On the other side, identity is a very important topic in SwiftUI to get the UI working properly.

Now I have this generic view I'm using with a closure which is displayed in two places (HStack & VStack). Should I store the closure result and get the performance improvements, or evaluate it in place and get correct identities (if that is even an issue)?

Simplified example:

struct DynamicStack<Content: View>: View {
    @ViewBuilder var content: () -> Content

    var body: some View {
        ViewThatFits(in: .horizontal) {
            HStack {
                content()
            }
            VStack {
                content()
            }
        }
    }
}

struct DynamicStack<Content: View>: View {
    @ViewBuilder var content: Content

    var body: some View {
        ViewThatFits(in: .horizontal) {
            HStack {
                content
            }
            VStack {
                content
            }
        }
    }
}