If a seeker can see kinetic investiture, why could they not see someone tapping their metalminds, if a leeches could stop this, or a duralumin/nicroburst could effect this theoretically (which I think was mentioned in a WoB, but could be making that up.)
Am I missing something?
Edit: For context, this question came up on a relisten of BoM when Wayne mentions Rotten Tomato to get in, so they don’t alert a Seeker with Wax’s allomancy.