It sounds you are auggesting to use SV to replaced SM, then will SV play the same role as SM play on DR for DR purpose?
This depends on your use case. They behave differently w.r.t. cascading and even if reversing SV relationship is possible in cDOT, it is more involved than using SM. Of course, various add-on tools that manage relationships may support only specific type (SM or SV) as well.