Don't put the full worker name [mph account name].[mph worker name] in the pool settings unless you tick the box to "ignore add to worker name on miner" on the Advanced tab on the pool settings. I highly recommend you just use the account name in the worker name, and let AM add on the rig name from the managed miner.
Ok I can't wrap my head around this.
I see it as 6 of one and half dozen of the other. Just a matter of preference.
If my worker name was the same for all of the pools for my machine it would make sense.
But since I name my workers accountname.coin i.e. Bubbajuju.Zencash or Bubbajuju.Zcash or Bubbajuju.Verge I would have to change the miner worker settings each time I switched pools.
So if I put the full worker name in the pool I can just switch pools on the miner.
Do you recommend your method for organizational means, or functional means or security means?
You do it so that you use one single pool setting for all of your rigs. Once you set your pool up, you don't have to change anything. Doing it your way, you'd have to setup a pool for each rig.