jim_p - yes. If you check the commit log for libreelec-10.0 versus 10.0.2 you will see it is very minimal changes. This is our stable release. The add ons are updated (to both the stable and nightly channels.) you will see the few kernel updates and some other minors. Basically you will be 10.0.2 (with an updated kernel and some fixes). When 10.0.3 comes out which will have the update Kodi patch release - it will be a matter of updating to that. The ability to update back an forward within 10.0.x works fine.
LE11 nightlies are different. There have been some big changes that are harder (more complicated) to go back and forward. But are doable.