You can easily pickup one or the other. In order to pickup two at the same time you would need to make the dish have a skew (if they do not have one already) and make a special bracket to hold the lnbf's / twin.
An adapter called a Flexi-block will work. I use one with a *C 75 cm elliptical dish. It takes some patience to set it up but it does work well. It should be possible to build a similar adapter.