I cannot speak about OWNING 2 together but one of Titan's best friends in Germany was a Vizsla along with a yellow lab.. Huckleberry Fin-Huck for short.. in fact here's the trio together..... we did everythign with these two and they had so much fun together. Never fights, always entertainment though.. lol. Granted a lot of that comes with breeder and temperment and training.. but I don't think you'd have a problem there.
Commander Charly Titan (GSD)-15 Jan 2010
Lady Athena (BB)-2011-2012 (RIP baby girl)