Hello Stephen
personally I wouldn’t be without it but I turn a variety of shapes and sizes, not just pens. For that it’s incredibly useful. I added my speed control afterwards but it’s cheaper to get it i. the first place ready fitted. As has been said, only you know what you want to do. Gain experience with the two club lathes then make your mind up and ask about for anyone either upgrading or changing hobby in the meanwhile
Above all have fun and stay safe whilst doing so