^^
The pet from FSW will still be unique and can't be transferred to the main character, but this is no different from getting a pet with an IM alt. That's the point and I believe this is also OP's concern, not that the boon alone makes it a problem, but when an alt (regardless it is IM, FSW or somewhere else) gets a pet my main need it really hurts.
In my case, my IM alt got a RC pet which was the last skilling pet my main need for the Master of All title. It really sucks. So I am for being able to send some account bound item to other characters in the same account. I know it is not happening now, but in the future when Jagex Launcher is fully released
01-Sep-2022 02:03:29