No XCI mounting for Atmosphere. Should be able to use tinfoil fine.
Sorry I meant installing from .xci, and not mounting it.
Whenever I mount an xci in SX OS from my Pendrive and I want to put Switch into sleep mode, it wakes up and quits the game ,so I think its bugged or something. So either ways I dont really use this feature even in SX OS.
I tried installing an .xci and it worked perfectly with Tinleaf so I am very satisfied. I don't see much point to use SX OS any more.