My mothers scooter was covered by medicare, but only for IN home use. they didnt care if she had a ramp to use it in the car or a way to use it elsewhere.

Most seats swivel. You pull the handle and it swivels to the side so you can stand on the ground and transfer to the toilet or tub. Most have a handle to raise or lower the seat.

comfort? hmm...you can go to a medical supply store, and sit in a few to try them out.

Many have pretend leather seats and are easy to clean, and wont matter if you spill on it. Just wipe it up. Others have cloth and while I personally find the cloth seats more comfy, they stain, and get dusty, and are subject to the same rules as your couch. Crumbs get in the cracks, odors and dirt hang on. it will require some cleaning. You can get seat covers for them. They not only provide protection, but some cushion as well.

Im so proud of you! A nice step up!