YiKes!! Please ignore my earlier comment ... as you might have figured out, I was thinking "spool" NOT bobbin!
Now on topic ... i currently have vertical, and previously drop in ... perhaps my inexperience, I didn't notice a difference!
As for FMQ without a foot ... I know some do it, but no way I am ready to try that ...... I'm sure I would have my finger FMQd into the project before too many stitches!