I currently use Debian 7.6 Jessie, with XFCE 4.10.. but also installed i3 (because it's the shit!)
I'm still kinda clumsy with i3 so I'm slowly trying the get used to it.. Thus in some situations would like to use XFCE then some other time i3.
Is there a convenient way to switch between them without loosing my sessions? And how do programs like firefox handle the changing of the WM/DE? (e.g. switch from XFCE (open firefox, save xfce session) to i3, where i then start firefox "again")?
edit: forgot to mention that I use SLiM as my login manager