Trigger a 430 Speedlite (film) with 430EX Flash

Have you tried trigging your EX with the 60D while trying to optically trig the EZ from the EX? I'm pretty sure the EX, when setup as a slave, will not emit a pre-flash.  A snoot on the slave detector would be required.

I don't have an optical slave, so I cannot try myself...

--
Yan