I have lowers for my 2009 SG with the quick detach kit. I take them off from time to time just to have a different look--like when I put my C&C Solo seat on, and want a sleeker look. I definitely put them on when I'm going on longer/overnight rides. It's harder to keep your foot on the footboards at 75 mph without the lowers. But I have a question for all of you: I too have been thinking about adding speakers to the lowers. For those of you that know, where do the wires go? Should I assume that if I add speakers to the lowers I won't be able take them off any longer?