Here's a few ideas:

Buck Hartsook (S30V steel)



Buck Mayo Kaala (S30V)



Benchmade Instigator (AUS 8)



Chris Reeve Professional Soldier (S30V)



Benchmade Activator (S30V)




RAT Cutlery IZULA Neck & Survival Kit Knife (1095)




Tons of commercial options out there, with a huge range in price. Even more options if you start looking into the custom stuff or have custom sheaths made.



(Sorry if the pics are a bit large.)