I love my machines with shuttles....they make a way cool sound while they're sewing!
To my way of thinking, the shuttle bobbins are no different to use than the round bobbins. You fill the bobbin, load it into the shuttle, pop it into the machine and sew.
I have a 28K handcrank that is fun to use...and I can take it with me if we go dry camping. (Camping without hookups for our camper) I've actually considered taking it to do some piecing in the car on a long trip as well! (Haven't done that yet, but I'm SURE I will!! It will sit on my knees as we go down the road, I've tested the theory here at home. LOL)