nomadic, living in VA we both know the laws are very vague, and as you mentioned written in the law is the term "bowie knife". A lot of tactical fixed blades might resemble a bowie to an uninformed LEO, and the decision as to how to handle the situation is solely up to him/her. Also, the discretion is also up to the LEO as to whether you are trying to "disguise the weapon's true nature"
§ 18.2-308. Personal protection; carrying concealed weapons; when lawful to carry.
A. If any person carries about his person, hidden from common observation, (i) any pistol, revolver, or other weapon designed or intended to propel a missile of any kind by action of an explosion of any combustible material; (ii) any dirk, bowie knife, switchblade knife, ballistic knife, machete, razor, slingshot, spring stick, metal knucks, or blackjack; (iii) any flailing instrument consisting of two or more rigid parts connected in such a manner as to allow them to swing freely, which may be known as a nun chahka, nun chuck, nunchaku, shuriken, or fighting chain; (iv) any disc, of whatever configuration, having at least two points or pointed blades which is designed to be thrown or propelled and which may be known as a throwing star or oriental dart; or (v) any weapon of like kind as those enumerated in this subsection, he shall be guilty of a Class 1 misdemeanor. A second violation of this section or a conviction under this section subsequent to any conviction under any substantially similar ordinance of any county, city, or town shall be punishable as a Class 6 felony, and a third or subsequent such violation shall be punishable as a Class 5 felony. For the purpose of this section, a weapon shall be deemed to be hidden from common observation when it is observable but is of such deceptive appearance as to disguise the weapon's true nature.
I think you are entering the gray area by looking for a "Good 6-7" Spear Point Combat Knife". You'd find it easier to explain a 4 or 5 inch bushcrafter.
Check out Dan Koster's sub forum here. He makes quality stuff, and the prices are very reasonable for the quality you get. There have been a lot of very nice customs for sale in The Exchange recently, too.
Good luck on your search.