It's not going to fit perfectly like regular bubbler attachments, but the 14mm Nectar Collector fits snugly around the top of the Yocan Evolve Plus' splatter cap enough where I can walk around the house with it. Personally, I keep them separate while not in use. It's just not worth the nectar collector falling over accidentally.

I bought this a while back. It has a pretty good spill proof chamber. While this is the one in the picture, and has a more complex spill proof chamber.