Just be aware a lot of AHJs take the first part of that sentence seriously "Enclosures for switches or overcurrent devices shall not be used as junction boxes" and they may want you to show that the listing for that enclosure and panelboard did provide "adequate space for this purpose".
You can't just take the first part of a sentence and ignore the rest.
You are allowed to use a panel as a jbox provided you meet the rest of 312.8 and unless you are really loading up the panel with splices or it is an older smaller panel there should be plenty of room.
