Yes, it's the real deal. Nothing touristy about that one.
By the engraving and blade style, i would have to say you have a nice sirupate there.
I won't speculate on the actual maker, as it could be KH(patan) or KH (Thamel), NKH (all under the KHHI umbrella) or GKH (separate entity in dharan). Whom all fill their niche quite nicely...as does H.I.. It could've also been made by any one of the Aruns in the area, wether contracted to KHHI or not. Hard to tell since none of them mark their khukuri with a brand distinction.
I also won't bore you with recommendations on where to buy, as that is not what you're asking about and many here already know what i would tell you anyway.
Careful polishing of a properly heat treated khukuri will not lead to any appreciable loss of temper. You should not worry about using that khuk for its intended purpose. Bear in mind though that a sirupate is mostly weapon and is not well suited to chopping chores.
Being a khukuri, though, it will still do the job, just not as well as patterns intended for that purpose. There are many styles of khukuri, designed to fill specific roles.
The Kauri or Cho and the Sword of Shiva are there for religious significance. They have always been there and probably always will be. Many would say that it is not a real nepalese khukuri without them. The inlay is brass, hammered into the pattern cold.
Here are a few links from the H.I. forum that should help you:
(this one is a must read)
http://www.bladeforums.com/forums/s...-and-Greatest-Safety-Thread.-REQUIRED-READING!
http://www.himalayan-imports.com/FAQindex.html
http://www.bladeforums.com/forums/showthread.php/719860-Himalayan-Imports-Link-Library
Feel free to drop by the H.I. forum to ask questions and to find out why we've imported the finest khukuri from nepal for over 20 years.