Dino, you're technical knowledge is an asset to the forum!
That said, I just dumped a can of recharge + leak sealant into my A/C, which was slowly losing cooling. After application, I still saw all bubbles in the sight-glass. But I figure if the leak is small and the sealant works, then I can give it another charge in a few days and it might hold. At $5-$6 a can, it's worth a try. Now I just have to check if my extended warranty covers the A/C system...