Bracing a bow with a 35 to 50 degree static bend I can get done easily using the push-pull method or a primitive stringer to brace.It gets more difficult when the recurve is set at 75 to 90 degrees as in the bow I showed.
To reinerate it's the degree factor here.You want the string to lift off the belly of the recurve the last few inches of draw to appreciate the design.Lesser degree of a bend the string lifts off sooner nullifying the effect.
As far as power and speed goes many an elk have been downed by a straight tipped self long bow.
After shooting many a deer here I have no doubt in my mind I could do that in elk country.