As he is not one to blow his own trumpet, Matakishi's own site is mostly devoted to Crosssfire. As he says, he has not dabbled in SCW, but there is almost certainly a lot of content which might be transferable.
I have never played Crossfire despite owning the rules, but as they are 'infantry heavy' they should be ideal for the SCW in theory. Obviously they are somewhat different rules to most mainstream sets, but I do like the concept behind them.