Oak leaf hydrangeas are an awesome landscape shrub to add to the garden. They get big and need room and enjoy part shade/part sun locations but if you have the right spot for one by all means add one! I'm always trying to propagate a few more but they tend to be rather tricky to propagate from cuttings. Layering is the easiest method and I've been 100% successful with that but the big drawback is you can only make a few at a time and you have to have suitable branches (low hanging). The advantage of cuttings is that you can make many more, however oak leaf hydrangea cuttings are difficult to root. 
The next challenge will be getting my new plants through the winter. Sometimes cuttings don't have enough roots to successfully make it through the cold months. For now I have them in a sheltered spot next to the house in a shady location. Fortunately my oak leaf hydrangeas have about 6 weeks before the first frost comes and I can protect them from that with the garden shed. They should have a little time to grow some roots!
Have you planted an oak leaf hydrangea yet?