Well, I'm thinking of using them as stands underneath the Geddes 24" high. They are typically toe'd in between 30 and 45 degrees as shown below. The GR Servo/Dymaxion sealed monopole is in the front left corners, OB servo's would be either under the Abbeys or maybe in between. Sorry, probably should have made new thread, so split to an OB setup thread if you want.
I put a w frame ob sub under each of the abbeys, as a stand, like you describe. I have the subs firing at a slight toe in, and the abbeys at a much steeper toe in angle (almost 45 deg). I don't sit too far, about 8.5' and they are separated about 8'. There is a little bit of overhang from the monitor over part of the sub, but doesn't look as bad as I thought. (I actually started a thread looking for help on how to incorporate these together this way.)
I had gone from 1 w-frame, to 2. And I think original location for the single integrated better (but I love the additional output). Also, should note that I have made several simultaneous changes, and I can't be sure to what to attribute the difference. I might try some more experimenting in placement.
Tony