The best reason I know to make one's own cyclewear, -heck, clothing in general - is to get something that fits in a style that is pleasing. Even back when the dinosaurs roamed the earth & I was skinny, no commercial clothing quite fit right, and in one way or the other lacked in the style department. So I learned to sew.
I haven't made any shorts or jerseys yet, but when I do, they will have the features I find useful, will be in the strong colors I favor and will fit over my hips. I'll post the results.
Give big space to the festive dog that make sport in the roadway. Avoid entanglement with your wheel spoke.
(Sign in Japan)
1978 Raleigh Gran Prix
2003 EZ Sport AX