I was watching this well-known video featuring Jaco Pastorius. In the video he says that he mainly practices with a fretted bass and only uses a fretless for gigs because, as he claims, the fretless would otherwise be totally chewed up from constant practicing. I hadn't heard of this happening before. Is this just Jaco being really hardcore, or is this a real thing? I was also thinking that perhaps a harder fingerboard wood, such as ebony, might alleviate this issue?