Can an office have Solidworks standard and professional and still use workgroup PDM?

We have 5-6 solidworks users and all have licenses of SWX professional but we are not using any of the functionality that is not available in the standard version. We have not been using workgroup PDM but are considering it (we should) and we need another license of SWX. Is it practical to have an office using PDM and one or two seats have only the standard level of SWX?

Thanks.

SolidworksWorkgroup Pdm