I have a Vamo V3, the ring comes off OK, but even without taking it off, it's not too hard to get the ring on (I just tried it). It doesn't raise the 510 threads, it threads onto the EGO threads and will provide a more stable platform for the bottom of the tank.
I haven't used it before with my PTs on the vamo or my SIDs, just the CTwists, but it works with them.
Issue is I have a V2 and that top part doesn't come off.
This is what I'm talking about: (Had to search the web for this)
OK I just got home and double-checked - the beauty ring I have on is actually one I purchased from https://www.myvaporstore.com/ProductDetails.asp?ProductCode=EGO-CDCT - the one from the pro-tank doesn't screw in far enough to allow the tank to make a good connection due to its flare.
Sorry for the confusion.