ColourOfSpring - 9:44 pm on Mar 22, 2013 (gmt 0)
With tablets and phones sales skyrocketing and exceeding new desktop purchases you should damn well be designing for RWD if you expect to survive at all!
Why do you create a different / RWD design for a tablet? Seems like overkill. As to "survive at all!" - I think this is only true if your original design is cluttered and generally ignores a lot of usability issues like "mystery meat" navigation that only appears on rollover and the like. There's a lot of these sites about, and they will likely be a nightmare in a small screen. If your site design is already simple, it should translate fairly well to even smartphones - maybe some small adjustments necessary but nothing more (IMHO).