Try EMDOM USA for the nylon version. They have double (use two for 4 mags), triple and six times. These are on top of each other vs side by side pouches. I used to use on top of each other for duty and tactical with my 220. The double wasn't too bad, not sure how thick the triple would be.
Got a little more time to elaborate: Several years back we had two officers carrying single stack 9mm S&Ws (the rest of us carried the double-stack 5906) I got them the Don Hume quad pouches; they seemed to work out well.
Uncke Mikes will be the cheapest retail, it might be difficult to find basketweave and nylon. Safariland is noted for the basketweave style. 773's and 771's are the single model numbers, but I recall multiple pouches at one time.