Question regarding GB and the need of a shuffler account

I do have a second account now with 1 miner/herber character. I've read things about making amazing amounts of gold and the shuffler accounts needed for that when using multiple gatherer accounts. I have a main account with all proffessions at 600. I do not want to bot those insane amounts of gold, just a steady cash flow that shows some ok numbers in a couple of weeks/months with just using 1 gatherer.

Is it save to just transfer the mats I make with the gatherer to my main account via the guild bank or is a shuffler account really recommended? Thanks in advance.