I think a pushdagger is illegal to EDC everywhere.
You better check your laws closely, a double edge dagger is illegal to carry everywhere that I have ever researched ..
Just have to look at state by state. Double edged knives, including push daggers, are ok in TN, long as blade is 4" or less, just like any other knife.
One iffy part is that the TN statutes don't define "blade" or specify how it is measured, so that 4" could include ANY metal beyond the end of the grip, not just the sharpened part, judgment call on LEO's part.
- OS