I tested it.
The results? The voice commands worked quickly and specific searches came up with what I wanted... sometimes. The big issue was with searching in general terms (an idea inspired by Eurogamer's trouble finding all the best RPGs). By trying to browse using generic terms you end up with a ton of useless and outdated hits. Maybe it's nit-picky of me, but I feel like Microsoft has to clean up the way Bing weeds out its search results.