I’ve been meaning to mention another advantage of the W that I’m not sure you’ve addressed on your website –
I occasionally launch my W on steep concrete boat ramps. These ramps usually are covered with slippery algae beneath the water surface making it dangerous to enter a SOT or Sit-in kayak from the middle while standing on the slippery surface.
A friend of mine trying to enter his SOT a few weeks ago fell flat on his rear (luckily he was not hurt, just wet). With the W, you simply push it in the water so that it nearly floats and the area between the entry hulls is dry, then jump on the seat from between the hulls while pushing off, thereby managing a perfect launch.