Matt, Bear in mind that Ken had personal lessons from Slydini, who, of course could only teach exactly how he did it.
Also Matt, if you're at Blackpool this year, ask Bob Swadling about the day Ken invited Bob and Valerie to London to show them around and to show them the bits and gags he did.
One highlight was taking Valerie into a high class haberdashery and asking to see the expensive ladies nylons (apparently for Valerie), which much to the chagrin of the proprietress, Ken proceeded to open, rip with a fingernail (as though testing for quality) and discard, demanding to see others.
Of course Ken was really buying them for the thread, so it didn't matter if he ripped them before purchase.
But that's only one of many, many episodes of a fun packed day.