Per the Honda Common Service Manual - the rims are different, from tubeless to tubes.
In addition, the Honda manual indicates that if the rim is meant for tubeless, it is marked. No marks for tube-only rims.
Some Comstars (reverse Comstars) are for tubes (1979 CB650) and some are tubeless (1980 CB650). The GoldWings are the same (79 is tubed, and 80 is tubeless).
To the best of my knowledge, all normal (i.e., not reverse) Comstars are meant for tubes.