Focer font of knowledge snorkelling

[BBROWN1664]

I used a Full Face snorkel like below, during the summer out in Turkey.
Worked really well, felt unobtrusive, plus I imagine quite similar to wearing a diving mask (without the tethered tank).

With this you have a great field of view plus all your face is enclosed, also you have no snorkel stuck in your mouth, feels natural.
Got it from Amazon for around £40. Was excellent quality and had no issues using it for long periods (couple of hours each session).

Also had an attachment for a GoPro etc. Mine was all Black, did look a little like Darth Vader! 

Having done snorkling and diving for about 40 years now I have never understood these masks. Masks can, and do, get water in them due to your face moving more than the rubber seal can tolerate or because they get knocked. With a normal mask, it is possible to take the thing completely off underwater and re-fit, then clear the water without the need to lift your head out of the water. or just clear the water if some has crept in. Is it possible with these?