IMHO, the DFX is lighter. But, I just changed over to the straight shaft for my Excal, so I haven't hunted very much in this mode. Now.....Sandman and others have come up with a chest mounted belt for the Excal, which is really a neat way of doing it. With Sandman & Company's chest mount, the controls are in front. With a hip mount, I felt like I couldn't make any quick adjustments without "thinking".
Now......with all of that said and done, let me qualify my statements by saying that even after a year with the Excal, I'm still a newcomer with it. So.....there are a ton of more experienced folk out there than I am.
---Mel
borninok