Wear an ankle holster too high, and it will print. Unless it is around the narrowest part of your ankle, you will need a very uncomfortable elastic leg garter to hold up the holster, and it will still drop down and start to spin around your leg.
Instead, make sure you wear long enough pants. If you get your normal size but "relaxed fit" then the leg won't rise up as much as you sit. I prefer to wear an ankle holster under my sock so that it (hopefully) looks like a bunched up sock if the pants leg rises above the top of the holster, but with anything larger than an NAA mini revolver, it is very difficult to make the sock look like a bunched up sock rather than a sock pulled up over something big and bulky.
It is very easy to get good ankle holsters for guns too large and heavy to work well for ankle carry, but very difficult to get good ones for really small, light guns that work well on the ankle. I have an Alessi for my Glock 26 but lately I always carry the Glock on my hip. It is an excellent holster but just not my preferred mode of carry for a primary weapon, and I am not aware that it is available for a Rohrbaugh. I don't think too many holster makers make ankle holsters for the Rohrbaugh yet, although several make really good pocket holsters for this gun.
