Little late to the party here, but I did plant a whole lot of re-bloomers in my daughter's garden in Salt Lake about 5 years ago. (we lived there too, until 2002 when we migrated to FL)
In her garden, with the same treatment for all the plants (they both work, so not much gardening happens unless I am there visiting) we've only had Rosalie Figge rebloom for us. It's a gorgeous dark purple. The rest, nada!
If I remember correctly, we had Orange Harvest, Victoria Falls, Tennyson Ridge and Cantina as well as Rosalie Figge. There was one summer that they got some extra TLC in July when I was house-sitting for them for 3 weeks. Still no reblooms from those darned iris. Here are her Orange Harvest, Victoria Falls and Tennyson Ridge from last May.
