Bark River Bravo necker 2, TOPS C.A.T. or Tom Brown "scout" model (same knife), BK14, Mora classic from Ragnar (leather sheath and slightly longer blade but light and thin = easy to carry), EKA Nordic hunter (somewhat thick in the handle, but light and very well made, leather sheath. Many of the Scandi tradition knives come with good sheaths and are generally very light for what you get. I currently carry a Jarvenpaa puukko 3.5" blade. When I made the switch from folding knives to fixed for EDU I initially was adamant that the sheath had to be Kydex, now I prefer leather, or Kydex lined with leather. Too many of the synthetic sheaths out there dull and scratch up the blade - if the knife is for general use and will be in and out frequently, leather is a better choice IMHO. Of all my smaller fixed blades, only the Bark River has a synthetic sheath that doesn't adversely effect the edge tho it does scratch the blade somewhat.