Easier than rim brakes, as you don't need to move the brake blocks out of the way to get the wheel / tyre out.
You'll need to make sure the wheel is correctly seated afterwards, though. If it is slightly misaligned, you'll be able to tell the pads will touch the disc when you spin the wheel. There are plenty of benefits of having the wheel in straight, so it's better to get it properly seated rather than move the brake calliper to allow for misalignment.
IMO.
Practice doing it a few times somewhere warm first. Dropping the disc back into the calliper takes a few attempts, as there isn't much of a slit to aim at. I've found the easiest way is to turn the bike over (so it rests on the bars and saddle, protect them before you do it, though) and let gravity help rather than fight what you are trying to do.