I think it depends on what trading strategies you prefer. If you are a rookie I don't think it is necessary to use PMAM functionality but if you are an experienced trader and already have your own trading system, it can be very helpful cuz you can manage positions and orders quickly and trade with multiple accounts with ease.😜

Idk. If you have several trading strategies or a couple of accounts that you need to manage then probably yes.
PMAM is not a heavily used thing at Fxcess i suppose. Although it can make your life a lot easier.