Did you check the map? Look at the upper right side of your screen. Right under the USA CArry Logo is a link labeled "Concealed Carry Maps"
Concealed Carry Permit Reciprocity Maps
Is Virginia CWP valid in Maryland?
No. There is no reciprocity in Maryland with Virginia (or most anyone else for that matter)...
Good judgement comes from expierence, which is usually the result of bad judgement. Learn from the experience of others, since it's a lot less painful than gaining it all on your own...
MD doesn't honor ANY other states' permit
Virginia has no such thing as a "CWP". The other part of the question has already been answered.
In the final seconds of your life, just before your killer is about to dispatch you to that great eternal darkness, what would you rather have in your hand? A cell phone or a gun?
Si vis pacem, para bellum.