I don't think there's any difference in the way the 2 different jib cuts clear the mast. That's more a matter of making sure the battens are trimmed down to where they barely protrude from the leech of the sail.

The foretriangle does get smaller as you rake further back. The jib clew moves down and aft. In order to get good sheet tension, you either have to pin the tack higher in the forestay adjuster and/or travel out the jib.

A lesson learned from the Worlds in Mexico was to always have the jib travelled out about 4", even in the lightest air. As the wind picks up, you rake back more and travel out the jib more to keep good sheet tension and the slot open.