It's true that ht passthru is a significant advantage. While I wouldn't describe the volume matching as a pain, it's a serious inconvenience, or semi risky. When I used my Musical Fidelity preamp for HT PT, I set the volume knob at 12:00 which is the only location that was stupid simple to replicate. It worked great, and took no time at all to set up; However, when I switched back to Music - that setting was too loud, so I always needed to remember to change before cueing up music - something I always worried about forgetting to do.
As for Hybrid amps - I'm not familiar with any. One way to get a hybrid is to go separates like I do. I have a tube preamp and SS power amps. The thing I like about my setup is my music preamp isn't even powered on when I'm in HT mode. Some preamps accommodate this, and some need to be powered on (which isn't a big deal as preamps consume very little power when not processing.
You may want to post another thread with a title something like "seeking Hybrid Integrated Amp recommendations". You'll need to specify what your budget is since "crazy expensive" means different things to different people.