I third or fourth the idea of trying to adjust what you have now.

Move the saddle around and try different things. Move it back and forth and alter the nose angle from strongly nose down to level. We are not all built the same so some of us cannot use what is considered a "normal" setup.

In my case ALL my saddles on the bikes that lean me forward even somewhat need to have the nose of the saddle angled down from 3 to 5 degrees depending on the bike setup. It's not a crime and it's not a fashion faux pas other than in the eyes of a few that don't really matter. The key is to alter the saddle angle and position until you feel the big majority of your weight on your two pelvic sit bones and less on that tender spot just ahead. If the angle you finally settle on results in you sliding forward all the time only THEN look at changing the saddle. Or maybe it's because you're reaching too far forward. Perhaps try a slightly shorter stem along with a slightly less tilted saddle.

The other thought is that if you are riding a bike that has an agressive racer like cockpit but you're sitting on the saddle like it's your lounge time at the end of the day then it's partly your riding style. On a performance or workout bike the saddle should be more of a "place finder" for your backside and less of a supportive couch. Even when you're coasting down a hill you should be mostly standing on one pedal or the other to take much of your weight.

Now on the other hand your desire to convert the bike to more of an upright style is based on how hard you ride then that would likely be the right option. But don't "give in" if you're keen on getting a good workout just because the bike isn't set up to fit you or you self analyze your riding style and realize that you're not "commiting" to the style enough.