Has anyone found any downside by using the OfficeServ DHCP server instead of using a customer provided Router for the IP addressing?

I'm installing an all IP system (SMT-I6021 sets) except for PoTs lines and the customer also purchased 15 We VoIP licenses.

I'm setting it up on the bench and right now I'm using the 7100 DHCP server but I'm wondering if this will make the customers Wifi access point for We VoIP clunky.

Any thoughts or Murphy's law stories would be appreciated.