I have a Givi tall screen for my AK550, ok for winter riding, has a good wind deflection for the handle bars too, but downright hot in the summer, I take the screen off entirely not even a shorty
I had a loaner bike when mine was in the shop, Vulcan 900 with one of those huge barn door almost perfectly vertical windscreens, rode it in the evening to a meeting, on way home it rained, nothing but glare, it kept all the engine heat right there, felt like a blast furnace. I ask myself why would anyone equip a bike like that