I swapped drops on one bike for a northroad bar and it has me bolt upright.

I switched to a pair of flatbar brake levers but the dropbar ones would have worked, and needed longer brake cables/housing (although I could have slid the brakes higher up the bars...). I used handlebar tape for grips, could have wrapped the whole bar I suppose.

Bar-end shifters were fine going from the ends of the drops to the ends of the northroad.

Different people ride differently but I find the bolt upright position puts more weight on my hands than I had before. I could be doing it wrong.