Yes I still play SEIV when I have time.
I've started many games on SEV but somehow they don't last very long because somehow the games on SEV are still not that fun compared to SEIV. Maybe it's because of the awkward user interface and bugs, but with all the good fixes in the patches, SEV is getting better and better. I like the 3-d graphics and tactical combat of SEV, so now when I play SEIV there's a vague sense of it being outdated so I want to play SEV. But then when I play SEV the controls and interface feel kind of cumbersome and I want to go back to SEIV. Hopefully, all the bugs and user interface problems will get sorted out eventually in SEV and then I'll probably fully switch over to SEV.