Some veterans have multiple ports, but usually follow very different strategies for running them. For example one could a ytd (year-to-date) port using daytrading as strategy, while having an older port using a long term strategy; or maybe a starbond only port.
I guess as long as you don't trade with the same strategy you wouldn't sound any alarm. Yet we've seen even some the most experienced manegers get caught in organized trading with multiple ports, which is penalized. HSX and its users are very good at noticing illegal stuff, so if you do something wrong, you will get caught sooner or later.