C4500x & evn

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We will be rolling out 4 4500X in our network as an aggregation (distribution) segment. We will connect Layer2 switches for access, use 4500X as Layer3 and configure multiple VRF's for traffic separation.
We will use VSS on 4500X although this is new feature. Also L3 MEC is missing but we can live without it for now. We are considering also use of EVN.

We have a lot of VRF and MP BGP like solution would simplify management.
What is your opinion, use EVN or use classic VRF Lite?
Are there restrictions you are aware of and should be taken into acount?

Anyone with 4500X in production?