It's a fun experience to play with a convex Baroque bow, but if you've ever tried to use it for anything romantic or later, you'll quickly want to get back to the concave Tourte design that everybody has nowadays.
The thing with convex bows is that they bounce around like mad. This can work quite well for the elegant-rhythmic dance feel of Baroque and early Classical music. But it works completely against you if you need biting attack and/or dramatic long tenuto notes. With such a playing style, a baroque bow feels like immersing styrofoam in water: the string seems to outright repel the bow. Whereas a Tourte bow can pretty easily be forced to “sink into he string” for straight sustained notes.
Some “historically informed” performers do use convex bows for Baroque music, but it's not like a Tourte bow doesn't still have some bounce and can convey that gracious character, especially when held in “Baroque position” (i.e. closer to the center of gravity, rather than right at the frog).