Swipe up = from inside to out = from me to the person infront of me. Swipe down = out to in = the person infront of me to me. To right / To left would be transactions/settings for either sides (most apps have have the burger menu at left or right, some with a swipe to right or left to view it. ex: amythest). The send screen would open up the camera immediately at full screen, however, at the bottom of the screen there'd be a field with a button to add an address (both option options active on the same screen). saves a tap or two with this design I'd imagine. If the user scans, or inputs an addresses, it switches to amount + confirmation screen to send. NFC scan is always on while the app is on or running in the background, so that's a direct to confirmation screen. Swipe down would show QR + copy address + field for custom amount with a button to re-generate QR with that amount + copy invoice button.
I think we definitely agree on the other views, just not on the swiping directions. 😄 E.g. Send view looks like this... pasting of address is a Paste button directly. https://m.primal.net/KfxT.png
The battle of the swipes has officially begun xD