If I use Skip to make a cross-platform app, will TalkBack be able to read it to users as well as VoiceOver?

Yes, the unique benefit of Skip is that you are using the real native toolkits on both platforms. So you get both SwiftUI's accessibility support via VoiceOver, as well as Jetpack Compose's support via TalkBack.

	▲	well_ackshually 3 hours ago \| parent \| next [-]
		Note: TalkBack is the best case scenario you're getting on Android. I've seen some abominations coming out of Samsung's implementation, and results will vary from device to device. Still, assume people are using TalkBack and don't take reports from anything else, it'll prevent you from going insane.
	▲	pxc 5 hours ago \| parent \| prev [-]
		That's awesome! My family has users of both, so this might be a convenient way to use a pleasant language to write mobile apps that all of my family members can play with.