Wow. I just stumbled across this thread
I'm the Guru Mike Casto that they're talking about.
Well, Sikal is, as has been mentioned, a hybrid of elements from various systems of Kali and Silat. Guru Ken has been training in Kali since 1979 and Silat since 1984. I'm not sure when he started teaching the Sikal blend, but I believe it was around 1990. I started with him in 1995.
The core of Sikal is drawn from (on the Filipino side) Lacoste/Inosanto blend, Balintawak Cuentada, and Doce Pares (both traditional and GM Cacoy's Eskrido variant). To a lesser degree, it also draws from some other Filipino arts.
On the Silat side, the core is drawn from Serak and Mande Muda, and some from Kun Tao Silat de Thouars.
Guru Ken has trained with Dan Inosanto, Diony Canete (Doce Pares Eskrima), Cacoy Canete (Doce Pares Eskrima/Eskrido), Bobby Taboada (Balintawak Cuentada), Nene Tortal (Dekiti Tirsia Siradis), and others, but these have been some of his primary influences. In Silat, he trained with Dan Inosanto, Paul, Victor, and Willem de Thouars, and Herman Suwanda.
He's also had some training with a host of other Kali and Silat instructors, but the ones listed above are his primary influences.
He's currently training in Sayoc Kali with Tuhon Chris Sayoc.
Guru Ken is an excellent martial artist and instructor. He's also a really great guy and I am honored to have been his student and friend for the past 8 years.
As far as the origins of the word, "Sikal." Guru Ken got the term from Guro Dan Inosanto. Apparently, it was a term that Guro Dan used briefly to describe the blend of Kali and Silat that he was developing -- now called "Maphilindo Silat" or the "Majapahit System."
According to Guru Stevan Plinck, he thinks that Guro Dan may have originally gotten the term from him. Apparently, he was talking to Guro Dan about the system Dan was developing and Plinck said something to the effect of, "Silat and Kali, huh? Do you call it Sikal?" Apparently, Guru Plinck was half-joking but the name stuck -- at least to a certain point.
As to why you don't hear much about it ... as far as Guru Ken is aware, he's the only person who uses the term. There were other people training in it with Guro Dan, but they wound up calling their stuff Maphilindo or Majapahit. Guru Ken told me once that he thinks there were a few people who stuck with the "Sikal" name, but he's not sure if the others are teaching, if they're using the name Sikal, or if they're even still alive.
NOTE: Any mistakes in this post are mine and mine alone. I think it's pretty accurate, but I may have slipped somewhere.
If anyone is ever in the area of Dayton, Ohio, visit Guru Ken's school. He's always happy to have visitors.
If anyone is ever in the area of Louisville, Kentucky, let me know. I'm also always happy to have visitors.
Mike