Especially if you're of the experimental bent, putting up and taking down antennas all the time, a mast that tilts over has a lot to commend it. Not least because you can do your work on or near the ground. That's faster and safer than climbing. Many active amateurs would know or know of someone who died from tower-related falls.
Have you had experiences with tilt-over towers? If so please share them in the comments below.