The Velo Build VB-R-099 would be my choice at the moment...or at least i thought so! They now have a VB-R-168 and VB-R-177 for sale. Both say that they are fully integrated with handlebars, but the pictures show a hole in the top of the fork.
The VB-R-177 must be very new as it's not yet available... looks very light too - 920g for a size M, 32mm tyres, 160mm rotors, 27.2mm seatpost. Could be the one when i can get enough money together!