The Dorso seems a different animal to the Shiver, and it's certainly no 690.
95hp and same weight as SD/hyper.
hmm well, these are claimed from the manufacturer so obviously a grian of salt.. but:
claimed 88kw/120Hp for the superduke..
claimed 70.8kw/95HP for the shiver
claimed 67.3kW/92HP dorso
claimed 65kw/90HP hypermotard
claimed 48kw/65HP for the duke
so I supose it's a stretch either way.. I've not ridden a shiver/dorso but the guys at the show this year were talking all kinds of HP numbers for the dorso, and how it would put the SD to the test.
I kind of doubt it.
As far as the dorso, and the shiver being different animals.. I'd guess they're a lot closer than say the multistrada/hyper.. Even the 690SM/Duke are going to be farther apart in terms of ride/purpose
In my opinion.. I'd go for the SD.. and keep a tard as well. I guess it's kind of like all the guys with the hypermotards thinking they have motards.. it's just not the case they're just standard bikes w/a funny front fender.