These will be vertical IWB with his metal clip. I've been carrying a CP in a DSG sheath, tip up/handle down, for a long time now.
My reason for going IWB is due to wanting the knife concealed better than OWB on the belt. I'm much more likely to have a coworker/friend/kid's parent spy my knife than I am to have to use it under duress. I don't feel like trying to explain why I carry a knife in that manner and so forth.