You can easily hang, remove, and adjust. No, Command Picture Hanging Strips are for one-time use only. We do not recommend hanging tapestry or other fabrics.
The second downside is that they are expensive compared to a hammer and nail. Can they be used as vertical or horizontal. Find great deals on eBay for Command Picture Hanging Strips in Home Wall Hooks and Hangers. Try to make them with washcloth as little gifts.