It is 13 years since I was on that route with VS. On different journeys it was both South over India and Thailand and North across Russia. I think the northerly route is now standard as it is shorter.
What you will see will depend very much on the time of your departure. So you can pick the time and then project flight times and adjust the clock time. However, as I recall, no Himalayas and the northerly route was fairly boring too. The -600 is OK but no different from any other 340 when you are actually sitting in it. I am a fan of VS service but, as with any carrier, it can change from one sector to the next. Hong Kong is a fun place to visit.
Someone with up to date experience will be along soon, I'm sure.