ive never worked with a more accomodating, customer-focused shop than Dave and Beth Windauer. They will do everything in their power to make you happy..and Dave is a fine craftsman in every way.
The grips on these bows are very different...and that is the most important thing in any bow- how it fits your hand.
the limbs on Robertson bows are narrower, thinner, with lower tip weight..hence the additional speed.
That also makes them more sensitive to proper handling-stringing and unstringing require strict adherance to using a stringer like the Selway...but that's a good practice with all bows anyway.
The Robertson is the faster bow...apples to apples..but pure speed isn't everything...and I agree, fit and finish are of the highest quality in both bows.
It comes down to you- if I were going to order a custom bow...I would not do so before shooting them both.
I love the Robertson I just found for my best friend's son...probably the prettiest recurve I've ever seen...its a Vision Falcon II..and the performance...at 54 lbs at 28 inches is remarkably quick AND quiet.
With custom bows,you can shoot a dozen from a maker and there will always be one or two of that lot that stand out as exceptional in the way they fit you, and shoot for you..its worth taking the time to try both and then decide so you get EXACTLY what you want.