I am not sure why latency would matter here… We are basically dealing with a huge chunk of data in a volume which is not separated nor called for separately?! right?
once the user wants to browse and go up or down, he can just scroll and it’s not like many files have to be called for within 1 second or something…
Short answer is, while it will speed up the paging operations associated virtual memory compared to regular SSD, it still not be very fast. Those advertised speeds never materialize in real environments, and it is not a single chunk you are trying to read/write (it would if you had the memory).
If you are regularly working with large datasets and want to use Slicer, increasing physical memory is probably the better investment. If you are only trying to get by, then it is ok, as it will speed up your regular IO as well.