I have an EZ and I like the Muddy River Tactical inside the pants leather holster. I'm a lefty so I can vouch that Muddy River Tactical makes a lefty version and it works great...
I think with the size of the EZ a leather inside the pants is more comfortable for me than a kydex version inside or outside the pants..
Muddy River Tactical's turn around time on holsters is pretty awesome...
I like the leather inside the pants holster for my EZ so much I'm seriously considering ordering the same holster for my Sig P320 Compact...