In a perfect world, I would have to vote for no clamp as long as the joint
fits tightly... The reason being, I think that most of us probably use too
much clamp pressure than is needed for a good BOND and squeeze out too much
glue. Using a brad to tack two pieces together, or using tape or similar
band clamps on tight fitting and mating pieces will not force out all the
glue needed for bonding.
Just my two cents...
Dennis Slabaugh, Hobbyist Woodworker