VCF and Active Directory integration

A couple questions regarding AD:

1) For AD integration, is there any issue if I join the PSCs to the domain and then use AD integrated authentication or should I be avoiding that and using LDAP? Currently using AD joined VCSAs in non VCF environment. Down the road (say VCF 4.x) when I imagine the PSCs will be converged, will there be an issue with having to join the vcenters to the domain as part of this process whereas LDAP might be less problematic?

2) Can I join ESXi hosts to an AD domain or will that cause a problem?= with SDDC manager?

Thanks