Bob, I too own some Metalla, obtained when they took over another royalty company I had shares in. I have a similar outlook as to their prospects, and will take opportunities to add to my share count as they are presented to me.
I would also advise you take a look at another royalty company, ELEC, which is focused on energy metals. I am certainly that like all smaller royalty/streamer companies it will be bought out in due course. And the way it trades, you occasionally get a chance to add cheap shares under 20 cents.
LC