I've used the consumer Rift with and without Touch and it really just comes down to the specific applications. There are plenty of applications where it doesn't make sense to use hand controllers (like space sims or car racing games) and plenty where it makes sense (shooters, social communication). In the long run my guess is more and more apps will use hands but we'll go through a skeuomorphic phase in the beginning where there is no clear input standard and we hold onto inputs from previous platforms.