I did some testing of the new Firebird inline blob feature and the support in Jaybird that will materialize in Firebird 5.0.3 and Jaybird 5.0.8/6.0.2. In a very artificial test with blobs of 200 bytes, it resulted in a whopping 15,000-25,000% (yes, thousand!) increase in throughput (blobs read per second) compared to Jaybird 6.0.1 and even 30,000-45,000% compared against Jaybird 6.0.0.
This is very exciting improvement!