"I'd have to be real careful crossing the runway"
Why would you fly anywhere near a runway of even a small airport? At least it will let you takeoff, then fly away from the airport. Anything else is just irresponsible.
If my employer wasn't paying for my Creative Cloud subscription, I would buy the speed controller. I have a Tourbox, and I map the jog wheel to the apps that I use.
Then that is the same type of offer I got when I decided to go from DR free to Studio......the Speed Controller is quite useful and you get DR Studio upgrades (i.e. V19 to V20) free forever......for me it was a no brainer.