Be "very" careful of the etching creams - they have an ingredient that causes seriously nasty issues.
Glove up - be careful - and avoid any skin contact.
Having said that - they (etching creams) do a great job on most glasses (some glass resists the etch more then others)
I would say well worth the change. I always felt win8 was disjointed - 10 has a more consistent feel.
I have loaded the upgrade on 15 or so machines without any problems (other then in early stage with search playing up - now sorted by MS