For similar reasons to my preference for my Sportsters (2003 XLH 883 and 2002 1200 Sport) over a Dyna Super Glide, Road King, etc.: More sporty, less touring oriented (my day rides are generally under 500 miles).
I found rider position much more comfortable on the Ryker, especially with pegs full forward and handlebars full rear.
Not excited about CVT, especially cruising at 6K RPMs and would have preferred a manual trans, but it is lightweight (900 is 616# dry), 150 mile range (getting 34 MPG in eco mode), acceleration is brisk and instaneous.
Not as fast as my CB1100 (0-60 MPH in 3.3 seconds), but brisk.
Access for maintenance better than Spyder:
Remove glove box for spark plug access
Remove panels, tilt front sub frame (with fuel tank) up for CVT access.
Prefer shaft final drive over belt. Liked belts on Sportsters, but a pebble could end a ride...did not keep me off fire roads in SoCal, but still a concern.
Sport windshield comfortable at any speed. Do not ask me how I know, but 100 MPH in eco mode is 7600 RPM (CB1100 was ~5,000)
BTW, I used eco mode for break-in. It performs so well, I have not even tested normal mode or sport mode...rear breaks loose easy enough in eco mode.