Re: 6wt bass taper ?
The more powerful front end of a bass line helps turn over big, bulky. Flies.
I'll use a bass line for bass fishing for that reason... I'm usually chucking chunky flies many of which I want to splat on the water to get the fishes attention. Bass lines just make a day or two throwing big bugs easier on you.
I haven't tried the Rio Outbound Short but have used the standard Outbound quite a bit. If the Short has a real skinny running line like the original Outbound I foresee tangles and snarls in your future.