Hello and welcome. An RT will definitely be a bit of a change from a sport bike, but once you get used to it you'll find you can still chuck it around when you want to. Enjoy your new ride and if you have any questions then sing out - I won't be able to answer them but there are plenty of knowledgeable people on here.
2016 (2017 MY) R1200 RT LE in white and black. Find me on twitter: @2WheelSolo. Also posting motorcycle vlogs on youtube: https://goo.gl/iM7y6X