I emailed Benchmade with that question last September, asking if they were going to make the 13100 a standard item without the skulls and HD logos. This is their response.
"Right now, we do not have those plans. We wanted to make some
different knives just for the H-D line and keep them H-D exclusive.
Let me know if you have any other questions, or if we can help out in
any other way.
Thanks"