This is a good example how a simple and very effective piece of diver gear can fall into disrepute because of poor training and a lack of understanding of its proper use. A snorkel should be a simple mouthpiece and tube and never attached to a mask. Once the reg. is brought into use the snorkel should be stowed and never left dangling from the mask or anywhere else. A snorkel is not an entanglement if it’s used properly. Just shows the level of training the people who banned it got.
I'm interested in how you do this. Do you remove your snorkel before descending, then put it back on when you reach the surface?
Assuming you still need to attach the snorkel to the mask to keep it pointing in the right direction, what sort of mechanism do you use that allows this ease of removal and replacement? Clip, flexible band, under the mask strap, etc.
I agree on the simple snorkel concept without the valves. I do keep a roll up one in my dry suit pocket for agency compliance.