There are a number of reviews, blogs and, indeed, youtube videos with examples of play - there is even a Youtube video entitled 'Dragon Rampant how to play'.
Was this thread your first (and only) port of call, or had you just missed those when searching?
Either way, a quick search should give you everything you need. Of the various sets of rules that use this system I think it works better, as a concept, with Dragon Rampant but that might just be me.