I had my first 50/50 burger yesterday at a small tavern....honestly, I couldn't really taste the difference between that and a regular burger...until I tried my girlfriends regular burger. The taste was different but it still was not a bacon taste. It was my first, so I did not know what to expect. If you try a regular burger side-by-side with one, you can taste a difference but to me it was not the traditional bacon flavor. To get that, simple but bacon on top or fry it up and mix it in.
Just my .02¢