Yes, this is possible with the ISR10 or later of MMSIM6.0  Version 6.0.1.174 or later of spectre.  Syntax is:

For vector file

In Spice netlist:
Code:

.vec 'vector_filename' [HLCheck = 0|1] 

In Spectre netlist:
Code:

vec_include 'vector_filename' [HLCheck = 0|1] 

vector_filename -- the filename of the digital vector file.

HLCheck = 0 | 1  Special flag (default=0) which turns on checking for the H and L states for input signals.  HLCheck is a special flag ( default = off) to create the vector output check for the H and L states of input signals. Bidirectional and output signals always check H and L states and are unaffected by the HLCheck flag. Normally, users do not need to use the HLCheck flag

For VCD/EVCD file

In Spice netlist:

Code:

.vcd "vcd_filename" "signal_info_filename"
.evcd "evcd_filename" "signal_info_filename" 

In Spectre netlist:

Code:

vcd_include  "vcd_filename" "signal_info_filename"
evcd_include "evcd_filename" "signal_info_filename"