I think my RMD will sit nice in leather and should ride in the cab of my car while my S5 will be in kydex and be better to sit in/on a pack. If I didn't have a SS4 I think I would like the HRLM but the SS4 has a nice balance and I can't see needing the extra weight so the SS4 fills the 4" roll just fine. I also have a HCLE that may be shorter but I think I covers a good bit of the same ground and I might acutally EDC it once it gets a decent edge.