Yeah, a Kenton is all you really need, but it's good to build this little circuit into a cable when you want to run your moog from some analog sequencers or the internal sequencer in some synths (like the Pro One or SH-101).
I've made a couple to trig my micromoog from my Formant sequencer (and more rarely from the 101 & P1).
BTW. i've been to Kenton Electronics in London (well, way out in Wimbledon), they're really the nicest people, but you wouldn't believe than these fine machines are built in that shabby old garage that is their factory/warehouse/office heh