Interesting solution...but I wonder if it wouldn't have been a more direct solution to employ Silent Way/Volta/etc and a cheap, used multichannel audio interface (I use a MOTU 828 mkii for this...sort of obsolete, audio-wise, but great as a DC-coupled CV/gate/trig bidirectional interface) to just send clock pulses to one of the BSPs, then daisy-chain that one's 'clock out' to the second's 'clock in'? It seems more straightforward in practice, actually, plus it allows me to do trickery like using my Seeburg Select-a-rhythm as a master clock, with the intermediary of VERY tight bandpass filtering and a Truetone Time Bandit, sending the resulting pulses from that device to one of the 828's inputs. It's not 100% sample-accurate like the USAMO solution...but I've found over the years that when things become TOO precise, you're probably heading for the aural equivalent of the Uncanny Valley. The human hearing apparatus actually likes a little bit of "slop", as it makes things sound more like what we expect from live musicians.
-- Lugia
Well it depends on the type of music you are making and how. The Motu is DC-coupled which is a huge plus. If you for example record the base live, drums and bass all in one run or even your Eurorack live performances in one take, you may feel you don't need the rest in perfect time and if you have a workaround the discrepancies in the timing, you may even rely very little on sync all together, even more reason to consider weather you really need a different solution, I guess.
I am a drummer and I like to track the drums last or at least late in the recording process. So to do that I need totally accurate performance from the system, it's hard enough to play in perfect time with a computer, and if the system is acting up you just can't deal with that.