normal weight lifting gloves do not suite the chinup bar. so when you want to protect your hand from developing painful callusses, weight lifting gloves are not so good (apart from the Gold's Gym ones) where as these are perfect. You get the feel, you can grip the bar well (often weight lifting gloves cause your grip to loosen on the chin up bar) these a re perfect for that.
However what makes them so good for the chinup bar makes them less effective for kettle bells (well, heavy ones any way). I am sure that for 16KG or 20KG they might be ok, but when you get to 24KG, the weight of the kettle bell and the thickness of the handle, highlight the thinnes of the glove and it starts to crease a bit, even with a very relaxed grip where you let the handle almost rotate freely in your hand, on returning from jerk or a snatch, the creasing causes a little snagging, much the sanme as you get with regular weight lifting gloves.
Its not a major issue just a minor annoyance. Its only a small snag, but it means the motion of your return swing feels slight impeded. Still if you can put up with that, watch your calluses disappear!