On the immi site they just say that the partner profession must be on the same list to claim the 5 points, but there's no mention about the visa class.
There I read that:
"Partner skillsYou can receive five points if, when you are invited to apply for this visa, your partner provides evidence that they:
were under 50 years of age
had at least competent English
had nominated an occupation on the same skilled occupation list as your nominated occupation
had been assessed by the relevant assessing authority as having suitable skills for the nominated occupation".
Every skill on the SOL is also on the CSOL, so in any case, both if someone applies for 189 visa (being on SOL) or for the 190 (being on CSOL) and the partner has a profession on SOL or CSOL, if the rule is applied as written the points could be always claimed.
It is a very interesting question...