Well, you don't mention what you will be carrying the speedloaders for - field carry, competition, duty use. Tex Shoemaker makes nice 2 and 3 loader carriers, but the ones I have are open topped (no cover). Work very well in the competition arena, may work for field carry once broken in but are definitely not for duty carry. He does have the covered type, but I have never used those. His leather goods are a touch spendy though.
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http://www.texshoemaker.com