Is there any difference between litigation and solicitor privilege?

Fish J. addressed the difference between the forms of privilege in paragraph 60 of Blank v. Canada (Minister of Justice): I see no reason to depart from the dominant purpose test. Though it provides narrower protection than would a substantial purpose test, the dominant purpose standard appears to me consistent with the notion that the litigation privilege should be viewed as a limited exception to the principle of full disclosure and not as an equal partner of the broadly interpreted solicitor-client privilege. The dominant purpose test is more compatible with the contemporary trend favouring increased disclosure.