I have one as well - and they use one for a display bike at a Triumph dealership near me. They had the new Daytona 650 thingy on it and the guy climbed on it to show me, it was bolted to the floor.
if you wanted to remove the engine you just use the attachments that lift the wheels instead of the engine mounts then every thing is free to get at, and no you dont have to bolt it down i know it doesnt look safe but it is ive never had a prob withit