May I suggest Bianchi Speed Strips in lieu of any speedloader? They are flat and disapear in a pocket with no rattle or bulk. With a little practice they are about as quick. I have carried them since about 1985 and have grown to greatly prefer them. They also come in pairs and I'll often drop one in a trouser pocket and the other in a jacket on the same side. Even if I put two strips in one pocket it gives me twice the round-count of a speedloader while still making less bulk.
One sometimes falls into thinking that something that works better on the range for qaul or competition is also good for the street. The range is, after all, where we do the vast majority of our shooting. Such is not always the case, of course.