That would be a cool cross JRnash.
One of the parent breeds to make the cornish was the Malay.
Here is a picture of a 5 month old cockerel who's a jersey/japanese oriental cross (50/50). He's absolutley huge for his age but he doesn't resemble the jersey at all :). IMO, crossing any...
It would still look like a malay but have minor jersey features. Waddle, flatter back. The oriental game genes are very prominent. You'd be best to use a 75% jersey/25% malay to cross with another jersey. Even an 8th malay would be obvious.
You'd end up so far from a jersey that it wouldn't...