I found the Quick Strike Q4U Hybrid Head as being just an average performer. After matching a 23 and 27 degree head with matching S.E. Quick Strike Q4 Wood Shafts, I was a bit disappointed in the lack of forgiveness and control upon testing.
The combination of head and shaft made for a very attractive product, but I do not foresee the demand for them due to performance vs price.
Before building one of these hybrids, be aware of the recommended lengths as it will be different from industry standards and effect swingweight. Also, these heads will have a hosel diameter of .355, so choose a shaft that will be applicable.