Most all tools of our trade can be obtained unhandle, great thing in then making your own comfortable handle, then you'll need a handle tool first to turn them ..
I've wondered on all the systems and locking means to for interchangeable blades single or double ends, how much extra faffing about as Brian put it is involved or safe changing and handling or storage, it's nice to see and grab a handle.
Then should you have a hollowing system handle and collet locking, a few specialized blades may not be out of place .. horses for courses .. it likely the way I'd enter into such a system, if it was the need for any more tools, can only use one at a time.
Cheers David