Regarding Waverley and Spokane, there's a bit more to the story.
At Spokane, Barker came in after Bendelow, and the club had every intention to proceed with his plans. Shortly after his visit, part of the land that the new course was going to be built on became the subject of a lawsuit to set aside the conveyance to the club. The law suit became somewhat of a non-issue, as it was soon learned that the land was going to be condemned by the Spokane, Portland & Seattle Railway for its access to the city. The club was forced to look for a new site, and in the spring of 1910 they settled on the Little Spokane River location.
We'll never know what Barker's course here might have turned into. But we do know the reasons behind why the site was abandoned, and it has nothing to do with any issues with Barker's work.
With respect to the "Portland Country Club" (this kind of phrasing often occurred when a course was the only one in town even though it had a different name), I too have not seen anything that affirmatively notes that Barker's plans were carried out. But something happened to the club between 1908 and 1916 when the course went from 5,862 to 6,211 yards. In any case, there should be no doubt that any references to Barker in Portland are in connection with Waverley.