(Posted in real time)
I now (04/30 11am PST) have a RocketHybrid in my box, combining (for test purposes only) a 1TB Hitachi 3GB/s drive with a 128GB Crucial 6GB/s SSD. The install documentation is (of course) dreadful, and also spends 2/3 of its time explaining how to set up the BIOS, but since they don't ship ANY printed documentation, I skipped all that, booted, and RTFM. The software (seems to) duplicate every function available in the BIOS.
I got it to start creating a HyperDuo drive, "optimized for capacity" - the other mode is "safe" (make duplicate of SSD data on the HDD, which is of no interest here). THERE IS NO INDICATION THAT ANYTHING IS HAPPENING. The docs say it can take 30 min, so I checked back, clicked on the HyperDuo. It claimed to be functional, and was showing the correct (1050.6 GB) capacity.
Docs make no mention of formatting. I checked with WinExplorer, but no sign of the drive. I quick-formatted it NTFS, and am now loading 450 GB of Apple Lossless (m4a) files onto it.
I figure the real thing of interest here is the auto-optimization function for frequently-accessed files. So standard HDD tests with temporary, fake data are pointless.
I discovered that if you don't configure this thing yourself, it will optimize nothing. You have to select folders and check:
Cache - if you want those folders put on the SSD (of no interest to me)
Auto - if you want those folders optimized automatically (duh!)
If you check neither, you'll get strictly HDD performance. (A simply awful choice for default.) When it's done loading, I'll tell it to auto-optimize all 450 GB.
I will then load 60GB of files into a MediaMonkey library, delete the library, and repeat, measuring time taken for each iteration. After 10 repeats, I'll delete the library and load all 450 GB into it once, then start at the beginning again, measuring each time. Nowhere in the documentation is the TRIM command mentioned, so I expect mixed results over time. Right now I have an hour to wait, so I'm going out for lunch.