Yes, both are possible, but not easy. I don't like pulling the carbs off unless I have too, so I've learned to put up with the challenges involved by working around them. Here are two tips that can make it just a little bit easier.
1) Loosen or remove the fasteners that secure the air box to the frame, as this will allow it to move around a bit, making installation of the boots slightly easier.
2) Spray a small amount of WD-40 inside the end of the fuel hose, as this temporarily lubricates the inside, allowing it to be pushed over the barb on the fuel fitting without too much effort.