I have done some experiments and it is fully possible to use the Piranha and the Titanium knives in combination. The best is to use the Piranha to hold and use the Titanium knife in the directions marked
on the Stainless Steel blade. The greatest advantage with these two in combination is the bit function or the hex opening. Then you can custom build a bit set for a task you need.
One of the biggest
problems with a multi-tool alone is when you need to work on two sides in one operation. With a combination or second tool/key then it is easier to do maintenance or different tasks without damaging a device.
The Piranha and Titanium with bits can be used how you want with one of them to hold and another to turn.