The goals of each are different. It is difficult to hold swing positions in you day trading account. In order to let profits run, you should not over-manage the position. This will likely happen if you are looking at the position all day in your day trading account. It is also important that the accounts are used at the proper time.
Day trades occur every day.
So do guerrilla tactics. Most every day some swing trades occur due to the various sectors we look at. Core trades may not occur all the time. They should be entered only at the appropriate times based on weekly charts. Having these accounts set up properly is your key to capitalizing on market moves.