I usually carry a speed strip or two when carrying a revolver. However, I am considering going to speed loaders. I used to use speed loaders with my home defense guns, and even though I've been using speed strips for a few years now, I find speed loaders to be much faster. Speed strips are quicker than loading rounds individually, but otherwise, the word "speed" is a bit of a misnomer. Meanwhile, I am almost as quick with a speed loader in a revolver as I am with a mag change in an auto. The speed loaders are bulkier, so it may take some experimentation with speed loader pouches to see what works best, but I hope to make the change.
However, when I pocket carry my Taurus 856UL, I will continue using speed strips. On the belt a speed loader pouch may work, but they are too bulky for pocket carry. Further, my pocket holster for my 856 (from Simply Rugged) has a slit in it for either two loose rounds, or to hold two of the rounds in the speed strip, making it easy to carry in the pocket without any added bulk. If I'm going with pocket carry instead of another option it is because I need to keep the bulk to a minimum.