Can litigation privilege apply to privileged communications between lawyers and clients?

In Blank v. Canada (Minister of Justice), 2006 SCC 39, [2006] 2 S.C.R. 319, at para. 28, Fish J. cited with approval the words of R. J. Sharpe (now Sharpe J.A.) in a publication entitled "Claiming Privilege in the Discovery Process" in Special Lectures of the Law Society of Upper Canada (1984) 163, at 164-65, some of which were: Litigation privilege, on the other hand, is geared directly to the process of litigation. Its purpose is not explained adequately by the protection afforded lawyer-client communications deemed necessary to allow clients to obtain legal advice, the interest protected by solicitor-client privilege. Its purpose is more particularly related to the needs of the adversarial trial process. Litigation privilege is based upon the need for a protected area to facilitate investigation and preparation of a case for trial by the adversarial advocate. In other words, litigation privilege aims to facilitate a process (namely, the adversary process), while solicitor-client privilege aims to protect a relationship (namely, the confidential relationship between a lawyer and a client).