That's a good idea invoking to find a staked address (I was going through their trust but couldn't find anything).
It would obviously be good if you could sign it Suchmoon however it definitley isn't mandetory (it just allows us to have a bit of a better reference). And means we don't have to depend on typed words for when the account goes back to Gleb - as there is then more proof that the account has left you.
Based on all the recent hacks why would you not have a staked address somewhere? I mean if either of those accounts now get compromised then you're stuck without them. I'd advse you stake one.
I never put any value on forum accounts. If I lose my account I'll just start over. Now having Gleb's account puts a bit more responsibility on me but maybe Bruno has a staked address on that one.
I don't think this is the attitude someone on DT should have.
If your account gets compromised then it's free to scam people out of anything. You might not put value on your own account, but someone else would.