Upgrading or Replacing?

[Csargo]

Somewhat hijacking, but speaking of paging files: if a PC has an SSD primary and HDD secondary, is it (in)advisable to spread the paging file between both? I have 16GB of RAM otherwise.

For context, I found that I needed to have a large paging file (among other things) in order to play heavily-modded Skyrim a few years ago and I haven't changed the settings since. (I didn't keep the paging file entirely on the SSD in part because heavily-modded Skyrim takes up a huge amount of disk space.)

From what I've read the biggest problem with using an SSD for that purpose is it shortens the lifespan of the SSD, I'm not sure if that's correct and/or how significant the effects are to the SSD. I don't know if their would be a problem with spreading it across both, other than the I/O speed of an HDD is a decent bit slower than an SSD, but I don't think it would be inadvisable to do. I would just imagine that if it were spread across both you'd be at the mercy of HDD speed when trying to access that data.