From what I have seen, it Is not so uncommon to see both as glazed.
if I may give my opinion about the picture above with the hawthorn, rather then the problem being a glazed pot for the kusamono, it looks too big to use with this tree, maybe that’s why the glaze stands out. Perhaps unglazed with same size would be more silent. Also to me the directional flow of the kusamono points wrong. But anywayz I know this is not the finished look but working fotos as you say.