Flash: Runtime Shared Libraries - Memory Benefit?

Suppose that I have two appl开发者_如何学JAVAications running on the same page. I have the Libraries compiled into the SWF file:

Suppose

MemoryFootPrint(App A) = App A SWF + Libraries
MemoryFootPrint(App B) = App B SWF + Libraries 

So:

MemoryFootPrint(total) = MemoryFootPrint(App A) + MemoryFootPrint(App B)

I am wondering if using RSL will lower the memory footprint of my two applicaitons. Will they share the same libraries. Will the memory footprint be:

MemoryFootPrint(total) = App A SWF + App B SWF + Libraries 

OR

MemoryFootPrint(total) = App A SWF + App B SWF + Libraries + Libraries 

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Is RSL intended to just improve the download time (via caching) or does it also lower the memory foot print of an applicaiton?

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The adobe page does not speak about RSIs and the memory footprint other than saying:

When you want to use a dynamically-linked library, you instruct the compiler to exclude that library's contents from the application SWF file when you compile the application. You must provide link-checking at compile time even though the classes are not going to be included in the final SWF file. At run time, the application loads the entire library into the application SWF file, which can result in slower startup times and greater memory usage.

From this I am assuming that there is no memory benefit from using RSIs.