BTW I do believe some people can tell that the emulator is slow even if it's accurate and they might like an FPGA-based solution. I'm an amateur musician and a long time ago when VSTs were new and I finally had a computer powerful enough to run one, I extensively measured latency and discovered that I could hear / feel any latency above 8ms between my finger hitting a key on the keyboard and the sound being emitted from the speaker, that's 1/125th of a second. If you were used to the real hardware and then played on an emulator, tiny slowdowns might affect you. That's down to skew, an issue which will take FPGAs to completely 100% solve.

In the far future things will be fast enough that the skew might be so miniscule that there's no point in using FPGAs any longer, who knows. But for now it seems valid if you're into it and don't mind spending some cash, and the people who just out of nowhere complain about FPGAs, especially here, seem extremely poorly informed.