Bill Thalmann at Music Technology (musictechnology.com) uses a Conrad Johnson Motif MC-10 solid state preamp with a Conrad Johnson Premier 8 tube amp with great results. Bill is a former Conrad Johnson engineer. I am sure if you email him at Music Technology, he would be glad to give you some feedback.
Tube preamp / solid state amp is more typical. Blue Circle actually makes a matching BC21 tube preamp and BC22 solid state amp. In a prior system, I use to run a Conrad Johnson tube PV-10 preamp, with their MF2100 solid state amp.