Session custom usage general question

Ignition
1

Has anyone had any particular issues with using session.custom to store values that are used between views and/or any pitfalls / issues with using session.custom things to avoid or works really well for x.

Not asking for anything in particular on my end currently.

2

I've had good luck using them to provide "global" variables to all the session's views.
Also use them for project level variables I want to have in one place.