Bought my K7 (same bike) with an MRA Vario screen on it, it was good with the spoiler up but not so much with it down (I'm 6'2"). It was already at the highest setting on the bike as well since my Sat Nav brackets demands that be the case. A slight tuck in and it was fine but I want to sit bolt upright when doing any distance.
I switched to the touring height version of the same screen and it's now fine with the spoiler down and I only flip the spoiler up for motorway cruising where I want total quiet. It's quite close to my eye line though with the spoiler up hence only using it when I'm cruising.
Not self serving at all but I still have the old standard height version going ;)