Congratulations on finding not one, but two agents you really like! You can sign an exclusive agreement with each one (in Virginia it's the law to have a signed agreement before they can show you properties), it just needs to specify you are looking for the purpose of a "Virginia primary residence" or "Maryland primary residence" in each respective agreement because while the agents you are speaking with are not multiple licensed, the agreement is technically with their Broker who could have licenses in both states. Maryland laws, taxes, are all very different than Virginia to the extent each County in Maryland has its own contract paperwork so it's good to have someone you feel comfortable in advising you. Best of luck!
Principal Broker, REALTOR VA/MD/DC
@home real estate