Very interesting will follow his progress with Interest thanks for sharing 
[QUOTE=aurum;4779323]
Golden Boy was approved in the Tuigpaard Book which is the driving horses book, since all are under the umbrella of the KWPN that is often confusing for people. But it is definitely not a book for the WB breeding. So yes it is an outside blood as he was a Saddlebred and therefore only entered into the Tuigpaard book. [/QUOTE]
However the KWPN allow it’s breeders to choose which studbook within the main book they register the offspring of the TP x RP stallions/mares when crossed between the two books.
We have fellow colleagues in Holland for example that have bred a number of TP palomino mares sired by Holland’s Golden Boy son “Modern” (Now gelded) to Hemmingway for example and these foals are registered in the RP book and more recently are now registered either DP (dressage) or SP (jumping) status within the VB progresing to STB when presented at the Keurings.
The Tuigpaard of these progeny is therefore already in the second generation and as Jangelaar has already stated can be directly registered as SP/DP within the VB as foals as first generation crosses.
Unlike the German studbooks the route to obtaining KWPN VB (Book I) papers is considerably quicker.
Indeed the KWPN will register foals sired by non approved stallions in the same book (Reg B) as approved stallions on the provision that the approved stallions gained approval from studbooks that they do not recognise.
However the KWPN allows for progression as they have an open studbook policy that is to say that whilst the progeny from REG B if mated with an approved KWPN or (Erkend) stallion will also be registered in the Reg B book, the next generation will be registered in the VB as DP or SP if sired by an approved KWPN or recognised (Erkend) stallion, therefore the process of moving from Reg B to VB is much quicker and requires only two generations of approved breeding. So whilst breeders may be at a disadvantage if they do not comply to the guidelines set out by the KWPN they do still cater for breeders choices. There are many roads to Rome 