Well, on the Provari it gets pretty dang tall with Penny on top, I can't comment on the Sturm as I don't have one.
IMO, the Penny would look best on a mod that is the same diameter, but I'm kinda .... like that with my mods/attys, YMMV. ;)
Now, an Ody on a GGTS with the GGTS native connector...