That's a good design for fairy high bracing. It would be efficient once braced high enough for relatively high string tension.
Try to do something different with bow design and the bow gods are going to mess with you: The closer a bow gets to no-string-tension bracing the lower it's FPS per stored energy. After release of a normally-braced bow, as string and arrow approach brace position, slight forward tip motion works to generates ever greater string tension, pulling the string ever straighter, yielding ever faster arrow acceleration. But a low-brace-tension string is unable to pull the string to such tension, low acceleration resulting in those last half-inches of travel when arrow speed is being topped off. So for a near-zero brace height bow to be efficient it mush have high string tension at brace height. This creates some challenges. But argue back if you see holes in this.
Patrick St M:
I took that feature simply as a wrist protector at the time, but it's been ages, so I can't remember if the bow was deflexed, the string straight at brace, resting on or just above that protecting stick, or if the stick actually elevated the string near its nocking point when braced, the string not straight; if so, this would prevent normal final acceleration of the arrow, possibly a conscious trade off for comfort. The bowmakers in that challenging and low-population part of the world were possibly the most innovative design experimenters of all time. Thanks for the reminder.