You can never have too many clamps, it is a good idea to pick up any that are available for a good price, especially at swap meets and garage sales no matter what style they are.
These are the tools that literally pull your projects together--and the bigger your projects, the more clamps you'll need. They draw all the joints tight and hold them that way while the glue cures.
Pipe Clamp Clamps boards or assemblies during gluing Slides along a length of galvanized or black pipe ? Clamp capacity is only limited by the length of the pipe