Bishop, as much as I am absolutely smitten with my Ody and Penelope, I still love my UFS

Personally, I think it handles china attys better than Ody in 510 mode does, though it can be a little more fiddly. YMMV.
To use Ody inside UFS, you place the rebuildable part in the drip mode base, then screw on the short mode mouthpiece. The UFS requires an extra tank extension for this Ody setup to fit inside. I actually bought an extra tank piece in order to do this back when the expansion packs were released, but I have yet to actually try this setup as I'm perfectly content with each device on its own
I'm glad to see the UFS is getting another production run, too

When I got mine, I had to order it from Tim in Australia 'cos everybody else was sold out and he had a couple left in stock. It was worth both the cost and the wait ;-)