I swapped my patrol bike's handlebars for a slight pull-back (and slight rise) model years ago and find this much more comfortable....The disadvantage being that I must move my knee slightly when making sharp turns.... Tends to hit.
There was quite a movement for "30 degree" ergonomic things some years ago; all sorts of things you hold and grip were promoted as being more comfortable and more efficient if the handle was "bent" to that figure. However, it doesn't seem to have caught on save in a very few cases.
Everyone's a bit different. Back when big, angled bar-ends were pretty common, I saw a lot of riders who turned them so that they were vertical and used them for an alternate grip position. This was popular enough that someone marketed an accessory brake extender (not unlike the old road-bike "suicide levers") that let you work the brakes from there.... Strange.