Some reading for you:
http://knife-expert.com/md.txt
A fixed blade hunting knife will be considered as a dirk or bowie knife. If it is "about your person"- and yes, a glove compartment will be considered as such- well, "Houston, we have a problem". Locked in your trunk should be a different matter.
Please note is not just concealed. It refers to carrying. Anne Arundel has some strict laws. Expect next year Maryland will begin outlawing sharp sticks, and pointy rocks. Need phone number for a good Realtor here in Virginia? Come on down 301, and cross over the bridge at Dahlgren.......